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Statistics Question

09/27/17

Find the expected gain or loss.

You buy a lottery ticket to a lottery that costs $10 per ticket. There are only 100 tickets available to be sold in this lottery. In this lottery there are one $485 prize, two $100 prizes, and four... more

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Statistics Question

09/25/17

If you draw a card with a value of four or less from a standard deck of cards, I will pay you $59. If not, you pay me $14.

If you draw a card with a value of four or less from a standard deck of cards, I will pay you $59$⁢59. If not, you pay me $14$⁢14. (Aces are considered the highest card in the deck.)

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Statistics Question

09/25/17

Word Problem

The five-number summary for midterm scores {number of points; the maximum possible score was 50 points} from an intro stats class is : Min 16.5, Q1 32, Median 39, Q3 43.5, Max 48.5. Would you... more

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Statistics Question

09/24/17

Suppose X ∼ B ( 1 0 , 0 . 2 ) X∼B(10,0.2). then what is the probability that X is less than 2

need to know about the formula which will be applied in the above question to find its probability

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Statistics Question Statistics Stats

09/24/17

(a) What percent of the runners have heart rates above 143? (b) What percent of the nonrunners have heart rates above 143?

In a study of exercise, a large group of male runners walk on a treadmill for 6 minutes. Their heart rates in beats per minute at the end vary from runner to runner according to the N(106,... more

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Statistics Question Statistics Stats

09/23/17

(a) The point z with 65% of the observations falling below it (b) The point z with 25% of the observations falling above it

Use Table A to find the value z of a standard Normal variable that satisfies each of the following conditions. (Use the value of z from Table A that comes closest to satisfying the condition.) In... more

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Statistics Question Statistics Stats

09/23/17

What percent of adults would qualify for membership? (Enter your answer to one decimal place.)

The scores of adults on an IQ test are approximately Normal with mean 100 and standard deviation 13. An organization requires an IQ score of 126 or higher for membership.

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Statistics Question Statistics Standard Deviation

09/19/17

find the randomly selected adult that has an iq between 83 and 115

Assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 15 .

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Statistics Question Statistics Distribution

09/19/17

Which of the following is NOT a requirement?

Which of the following is NOT a requirement for using the normal distribution as an approximation to the binomial distribution? Choose the correct answer below. A.The sample is the result... more

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Statistics Question

09/19/17

A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 10-key keypad. Repetition of digits is allowed. What is the pr

A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 10-key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first try?

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Statistics Question

09/18/17

The average grade for a math test was 79 with a standard deviation of 6.5. (a) If the grades are normally distributed, estimate what percentage of grades is bet

I'm not sure how to do this. please help

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Statistics Question Statistics Statistic Stats

09/17/17

can someone explain how to get the percentage?

Scores on the Wechsler Adult Intelligence Scale (WAIS) are approximately Normal with mean 97 and standard deviation 14. People with WAIS scores below 69 are considered intellectually disabled when,... more

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Statistics Question Statistics Stats Statistics Method

09/17/17

can someone explain how to get the percentage?

The scores of adults on an IQ test are approximately Normal with mean 110 and standard deviation 17. An organization requires an IQ score of 144 or higher for membership. What percent of adults... more

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Statistics Question

09/17/17

scores of an iq test have a bell shaped distribution with a mean id 100 and a standard deviation of 20. use the empirical rule to determine the percentage of pe

scores of an iq test have a bell shaped distribution with a mean id 100 and a standard deviation of 20. use the empirical rule to determine the percentage of people has an iq score between 60 and 140

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Statistics Question Statistics Stats Probs And Stats

09/16/17

What percent of women over 20 have upper arm lengths less than 32.9 cm?

The upper arm length of females over 20 years old in a country is approximately Normal with mean 35.1 centimeters (cm) and standard deviation 2.2 cm. Use the 68-95-99.7 rule.

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Statistics Question Statistics Statistics Method

09/13/17

what is highest level of measurement (nominal, ordinal, or Interval-ratio) for income

1. Determine the highest level of measurement (nominal, ordinal, or Interval-ratio) for each of the following variables. Identify the highest level at which the variable might be measured. Explain... more

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Statistics Question Statistics Probability Distribution

09/12/17

The probability that the number of successes is exactly 0

assume that a procedure yields a binomial distribmutinous with 3 trials and a probability of success of 0.10. Use a binomial table to find the probability that the number of successes is exactly... more

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Statistics Question Statistics Variables Binomials

09/12/17

Is x a binomial random variable?

The employees at a General Motors assembly plant are polled as they leave work. Each is asked, “What brand of automobile are you riding home in?” The random variable to be reported is the number of... more

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Statistics Question Statistics Probability Distribution

09/12/17

What is it that differentiates a binomial probability distribution from any other probability distribution?

What is it that differentiates a binomial probability distribution from any other probability distribution? Honestly didn't know It was a difference my teacher explained that I only got half... more

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Statistics Question Statistics Binomials

09/12/17

Use a binomial probability table to find the probability that the number of successes x is exactly 1

Assume that a procedure yields a binomial distribution with n=2 trials and a probability of success of p=0.40, Use a binomial probability table to find the probability that the number of successes... more

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Statistics Question Statistics Deviation Maximum And Minimum Value

09/12/17

Would it be unusual for one of the test subjects to have a pulse rate of 127.8 beats per minute?

A certain group of test subjects had pulse rates with a mean of 84.6 beats per minute and a standard deviation of 11.6 beats per min. For some reason, I keep getting the incorrect answer for... more

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Statistics Question

09/12/17

difference between the average

On the "Television watching" tab of the spreadsheet, a column titled "Sample of U.K. residents" lists the hours each of 15 randomly selected United Kingdom residents reported spending watching... more

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Statistics Question

09/09/17

You draw a single card from a standard deck of 52 cards. What is the probability that it is not an ace?

need a answer for this question

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Statistics Question

09/09/17

You draw a single card from a standard deck of 52 cards. What is the probability that it is not an ace?

how to answer this question

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Statistics Question

09/09/17

You draw a single card from a standard deck of 52 cards. What is the probability that it is not an ace?

HOW do I answer this question

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Find the expected gain or loss.

If you draw a card with a value of four or less from a standard deck of cards, I will pay you $59. If not, you pay me $14.

Word Problem

Suppose X ∼ B ( 1 0 , 0 . 2 ) X∼B(10,0.2). then what is the probability that X is less than 2

(a) What percent of the runners have heart rates above 143? (b) What percent of the nonrunners have heart rates above 143?

(a) The point z with 65% of the observations falling below it (b) The point z with 25% of the observations falling above it

What percent of adults would qualify for membership? (Enter your answer to one decimal place.)

find the randomly selected adult that has an iq between 83 and 115

Which of the following is NOT a requirement?

A thief steals an ATM card and must randomly guess the correct five​-digit pin code from a 10​-key keypad. Repetition of digits is allowed. What is the pr

The average grade for a math test was 79 with a standard deviation of 6.5. (a) If the grades are normally distributed, estimate what percentage of grades is bet

can someone explain how to get the percentage?

can someone explain how to get the percentage?

scores of an iq test have a bell shaped distribution with a mean id 100 and a standard deviation of 20. use the empirical rule to determine the percentage of pe

What percent of women over 20 have upper arm lengths less than 32.9 cm?

what is highest level of measurement (nominal, ordinal, or Interval-ratio) for income

The probability that the number of successes is exactly 0

Is x a binomial random variable?

What is it that differentiates a binomial probability distribution from any other probability distribution?

Use a binomial probability table to find the probability that the number of successes x is exactly 1

Would it be unusual for one of the test subjects to have a pulse rate of 127.8 beats per​ minute?

difference between the average

You draw a single card from a standard deck of 52 cards. What is the probability that it is not an ace?

You draw a single card from a standard deck of 52 cards. What is the probability that it is not an ace?

You draw a single card from a standard deck of 52 cards. What is the probability that it is not an ace?

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A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 10-key keypad. Repetition of digits is allowed. What is the pr

Would it be unusual for one of the test subjects to have a pulse rate of 127.8 beats per minute?