10/22/22

If x is a binomial random variable, compute P(x) for each of the following cases
P(x<or=3), n=8, p=0.4P(x)=?P(x>3), n=8, p=0.3P(x)=?P(x<1), n=8, p=0.3P(x)=?P(x>or=7), n=9, p=0.3P(x)=?
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10/22/22

May I get help on this?

A quiz consists of 10 multiple-choice questions, each with 6 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing... more
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10/22/22

Can I get help on this please? I'm not getting this.
Suppose it is believed that the probability a patient will recover from a disease following medication is 0.8. In a group of twenty such patients, the number who recover would have mean and... more
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10/22/22

Suppose that you flip a coin 15 times. What is the probability that you achieve at least 6 tails?
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10/22/22

Am I able to get help with this? I kept trying and I'm not getting it.
In the United States, voters who are neither Democrat nor Republican are called Independent. It is believed that 11% of voters are Independent. A survey asked 35 people to identify themselves as... more
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10/21/22

elementary statistics

The random variable xx represents the number of received at a help desk in one hour, and it has a Poisson distribution with a mean of 15.6.What is the variance?variance = What is the standard... more
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10/21/22

A particular professor has noticed that the number of people, P, who complain about his attitude is dependent on the number of cups of coffee, n, he drinks.
From eight days of tracking he compiled the following data:People (P) 12,10,8,8,7,5,4,2Cups of coffee (n) 1,1,2,3,3,4,4,5Unless otherwise stated, you can round values to two decimal places.a) Using... more
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10/19/22

Sampling Distrubtions
It is known that 20% of people ride public transport without paying for it. We talk to 63 people who have been on public transport in the last month. What is the probability that the sample... more
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10/19/22

Statistics Class
An orange juice producer buys oranges from a large orange grove that has one variety of orange. The amount of juice squeezed from these oranges is approximately normally​ distributed, with a mean... more
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10/19/22

what is the percentage of scores between two numbers if you have a mean and standard deviation
the question is "If the mean is 95 and the standard deviation is 12.5, what percent of employees would have IQs between 90 and 110?
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10/18/22

help help help help
Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If we want to estimate this proportion to within 3% at the 95% confidence level, how many randomly... more
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10/17/22

what is the probability that the die lands on a 13 or a 1
Suppose a special 14-sided die is rolled once where each face is marked with a number 1 through 14. What is the probability that the die lands on a 13 or a 1?
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10/15/22

What’s the probability

Assume that when adults with smartphones are randomly selected, 53% use them in meetings or classes. If 10 adult smartphone users are randomly selected, find the probability that at least 3 of them... more
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10/14/22

Enter your answers as numbers accurate to 4 decimal places.
A particular fruit's weights are normally distributed, with a mean of 536 grams and a standard deviation of 10 grams.If you pick 24 fruits at random, what is the probability that their mean weight... more
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10/11/22

The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 31 liters, and standard deviation of 7.2 liters.
A.) What is the probability that a daily production is less than 29.7 liters ?B.) What is the probability that a daily production is more than 51.8 liters ?( Round 4 decimal )
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10/06/22

Compute the probability of randomly drawing 5 cards from a deck and getting exactly 3 spades.
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10/04/22

STAT CLASS \\\\\\\
The probability of a tourist visiting an area cave is 0.70 and of a tourist visiting a nearby park is 0.61. The probability of visiting both places on the same day is 0.41.The probability that a... more
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10/04/22

A binomial experiment has the given number of trials n and the given success probability p. n=9,p=0.4
A binomial experiment has the given number of trials n and the given success probability p. n=9,p=0.4
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10/01/22

stat question 6
Do male and female servers at Swank Bar work the same number of hours? A sample of 70 female servers worked an average of 34 hours per week, with a standard deviation of 5. A sample of 70 male... more
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09/30/22

Z scores and probabilities
The honors program at Brad's university only accepts students with an entrance exam score over 400. What percentage of students would be eligible if the students at Brad's school have an... more
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09/28/22

Use the Normal model ​N(​100,16​) describing IQ scores to answer the following.
​a) What percent of​ people's IQs are expected to be over 80 ​?​b) What percent of​ people's IQs are expected to be under 85​?​c) What percent of​ people's IQs are expected to be between 116 and... more
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05/24/22

what is a quadratic equation to model this table:
x y1 12 73 17
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05/16/22

point and slope of the equation y - 3 = 2(x + 5)?
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05/06/22

A rectangle is drawn so the width is 8 inches longer than the height. If the rectangle's diagonal measurement is 57 inches, find the height.
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04/15/22

The function h(t) = -16t^2 + 32x + 240 depicts the flight of a canon ball shot from 240 feet in the air with an initial velocity of 32 feet per second. 2.How high does the canon ball fly

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