844 Answered Questions for the topic Statistics Question

04/01/18

#### Statistics, please assist with break down... I received 1% as the answer.. is this correct?

A computer manufacturer uses graphic cards made by two companies N and I. They are using the cards made by N in 80% of the computers and made by I on 20% of the computers. They have found that 2%...
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03/29/18

#### Find the value of the test statistic

I would really appreciate the help guys. Thanks again !
1)the claim is that the proportion of peas with yellow pods is equal to 0.25 the sample statistics from one experiment include 560 peas...
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03/28/18

#### helpmeplease

Two cards are drawn without replacement from a standard deck of 52 playing cards. What is the probability of choosing a queen for the second card drawn, if the first card, drawn without...
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03/25/18

#### an urn holds 4 pink marbles, 6 white marbles, and 5 purple marbles.

a) If you pick a marble at random, what is the probability that it is white?

03/21/18

#### Statistics Question

The Price of a bond is uniformly distributed between $80 and $90.
a. What is the probability that the bond price will be greater than $83?
b. What is the probability that the bond price will...
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03/18/18

#### Statistics Question for Blind Bag purchases.

If the odds of getting a certain character in a blind bag is 1 in 5 and the bags cost $2.00 each, how much will you need to spend before you might get a certain one? Is it as simple as 5 x $2.00 =...
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03/18/18

#### Find the area of the shaded region

A graph depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the area of the shaded region.... (between the IQ scores of 102...
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03/16/18

#### Standard Deviation

Suppose it is known that the weights of a certain group of individuals are approximately normally distributed with a mean of 140 pounds and a standard deviation of 25 pounds. What is the...
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03/15/18

#### In a hospital 60% of the patients are married. What’s the probability that a sample of one word with 8 patient, had 3 were married

In a hospital 60% of the patients are married.

03/12/18

#### What is the probability of selecting a jury of all students?

The grade appeal process at a university requires that a jury be structured by selecting seven individuals randomly from a pool of eleven students and eight faculty.
(a) What is the...
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03/11/18

#### is it possible for eight employees to earn between $300 and $350 while the ninth earns $1250 per week, and the mean be $430?

need help with this ... math really isn't my thing but I have to have it for masters in nursing

03/11/18

#### What is the cost to rent a trailer for 3.6 hours?

The charge to rent a trailer is $2020 for up to 2 hours plus $6 per additional hour or portion of an hour. Find the cost to rent a trailer for 3.6 hours, 4 hours, and 7.2 hours.

03/09/18

#### There are 136 passengers on a plane. 78 of them are women. 21 of them are men who purchased non-refundable tickets.

There are 136 passengers on a plane. 78 of them are women. 21 of them are men who purchased non-refundable tickets. 1) If you put the names of all the passengers in hat and then drew two names...
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03/08/18

#### The weight of a sperm whale’s brain is normally distributed with a mean of 15.5 pounds and a standard deviation of 3.6 pounds.

The weight of a sperm whale’s brain is normally distributed with a mean of 15.5 pounds and a standard deviation of 3.6 pounds. What is the probability a randomly selected sperm whale will have a...
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03/08/18

#### Find the probability of correctly answering th first 4 questions on a multiple choice test if random guesses are made and each question has 5 possible answers

Statistics

03/07/18

#### Please Help with Statistics

A recent estimate of Congress’ approval rating was 17%. What sample size does this estimate suggest we should use for a margin of error of 0.04 with 95% confidence?

03/06/18

#### Think of a simple random sample X1,...,X5 following the distribution N(mu,sigma^2). Show that the statistic W=(X1+4X4-2X5)/3 is an unbiased estimator of mu.

Also: What distribution does W follow? Specify the mean and variance.

03/03/18

#### Assume the random variable X is normally distributed, with mean equals 60 and standard deviation equals 9. Find the 10 th percentile.

find the 10th percentile

02/28/18

#### When Joe plays a board game with his four sisters, any one of the five players is equally likely to win.

They decide to play the game repeatedly until Joe wins a game, and then they will stop. Assuming that the outcomes are independent, what is the probability that they play at least three games?

02/23/18

#### what is the area under the standard normal curve between z=−2.9 and z=0.28?

I need to know the area under the standard normal curve

02/20/18

#### How much did your classmates typically spend on game downloads last year

is this a statistics question?

02/20/18

#### How many 3-digit number with no repeated digits using 4, 5, 6, 7, 8 can be a) less than 520; b) greater than 600; greater than 5000?

Solve the following problems. Write the formula, give, solution and final answer.

02/18/18

#### Give your answers as decimals, to two places

You measure 37 textbooks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 5.8 ounces. Based on this, construct a 90% confidence interval for the...
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02/18/18

#### read the description . I need work and an explanation

Tom and Jan are planning on applying to attend KSU. Tom takes the ACT while Jan decides to take the SAT. The mean score on the ACT is a 17 with a standard deviation of 5, and the SAT mean score is...
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02/18/18

#### How many different ways can the officers be appointed?

A corporation must appoint a president, cheif exectuive officer (CEO), cheif operating officer (COO), and cheif financial officer (CFO). It must also appoint a planning committee with five...
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