Newest statistics Questions | Wyzant Ask An Expert

Statistics

11/01/23

If n=530 and p' (p-prime) = 0.78, construct a 90% confidence interval. Give your answers to three decimals. < p <

Follows • 1

Answers •2

Statistics

11/01/23

If n=15, ¯x(x-bar)=41, and s=9, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population.

If n=15, ¯x(x-bar)=41, and s=9, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal... more

Follows • 1

Answers •1

Statistics

11/01/23

If n=530 and p' (p-prime) = 0.78, construct a 90% confidence interval. Give your answers to three decimals.

Follows • 1

Answers •1

Statistics

11/01/23

What is the p-value and positive significance level?

Test the claim that the mean GPA of night students is significantly different than 3.1 at the 0.1 significance level.Based on a sample of 37 people, the sample mean GPA was 3.13 with a standard... more

Follows • 1

Answers •1

Statistics

10/31/23

A person going to a party was asked to bring 2 different bags of chips. Going to the store, she finds 15 varieties. How many different selections can she make?

Follows • 1

Answers •2

Statistics

10/30/23

Null and Alternative Hypotheses

24% of people support legalizing gay marriage. Express the null and alternative hypotheses in symbolic form for this claim (enter as a percentage).

Follows • 1

Answers •1

Statistics

10/30/23

Null and Alternative Hypotheses

At least 82% of workers indicate that they are satisfied with their job. Express the null and alternative hypotheses in symbolic form for this claim (enter as a percentage).

Follows • 1

Answers •1

Statistics

10/30/23

What is the elements of the hypothesis testing?

Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the... more

Follows • 1

Answers •1

Statistics Math

10/29/23

Statistics Question

Suppose Brian believes that over 50% of the packages include more than 140 grams of chocolate. Based on the same sample of 16 packages, he is interested in testing his belief. Write down the formal... more

Follows • 1

Answers •1

Statistics

10/29/23

Adult IQ percentage

Assume that adults have IQ scores that are normally distributed with a mean of =100 and a standard deviation =20 . Find the probability that a randomly selected adult has an IQ less than 128

Follows • 1

Answers •1

Statistics

10/29/23

Human body temperatures are normally distributed with a mean.

Assume that human body temperatures are normally distributed with a mean 98.20F of and a standard deviation of 0.61F.a. A hospital uses 100.6F as the lowest temperature considered to be a fever.... more

Follows • 1

Answers •1

Statistics

10/28/23

Maths/statistics

Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and the time a patrol car radios that it has arrived at the scene. Over a... more

Follows • 2

Answers •1

Statistics

10/28/23

CNNBC recently reported that the mean annual cost of auto insurance is 1029 dollars. Assume the standard deviation is 219 dollars. You take a simple random sample of 60 auto insurance policies.

Find the probability that a single randomly selected value is less than 976 dollars. P(X < 976) =Find the probability that a sample of size n=60 is randomly selected with a mean less than 976... more

Follows • 1

Answers •1

Statistics

10/28/23

business statistics

A population of values has a normal distribution with μ=79.7 and σ=87.1 You intend to draw a random sample of size n=72. What is the mean of the distribution of sample means? μ¯x= What is the... more

Follows • 1

Answers •1

Statistics

10/28/23

A population of values has a normal distribution with μ = 35.8 and σ = 48.2 . You intend to draw a random sample of size n = 102

What is the mean of the distribution of sample means? μ¯x= What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) σ¯x=

Follows • 1

Answers •1

Statistics Math

10/27/23

How do i go about solving this? i was sick and missed class, but the notes dont seem to be helping

n a large population of adults, the mean IQ is 117 with a standard deviation of 15. Suppose 40 adults are randomly selected for a market research campaign. (Round all answers to 4 decimal places,... more

Follows • 1

Answers •1

Statistics

10/25/23

please help me answer this

A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.9 hours. A psychologist would like to conduct interviews with the 15% of the... more

Follows • 1

Answers •2

Statistics Math Sat Math

10/25/23

Assume that a procedure yields a binomial distribution with a trial repeated times.

Use either the binomial probability formula (or a technology like Excel or StatDisk) to find the probability of successes given the probability of failure on a single trial.

Follows • 1

Answers •1

Statistics

10/25/23

With one method of a procedure called acceptance sampling

a sample of items is randomly selected without replacement and the entire batch is rejected if there is at least one defective unit. The ABCD Electronics Company has just manufactured 4500... more

Follows • 1

Answers •2

Statistics

10/25/23

The table summarizes results from 985 pedestrian deaths that were caused by automobile accidents

Driver Intoxicated? Pedestrian Intoxicated? Yes No Yes 60 74 No 289 562 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated. Report... more

Follows • 1

Answers •1

Statistics

10/23/23

how do I solve this step by step and what is the final answer

Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 18 9 8 35 Female 13 14 3 30 Total 31 23 11 65 If one student is chosen at random,Find the... more

Follows • 1

Answers •1

Statistics

10/23/23

Express the confidence interval 33.8% < p < 45.4% in the form of p^ +- ME

Express the confidence interval 33.8% < p < 45.4% in the form of p^ +- ME.Unsure of what the two percentages would be.

Follows • 1

Answers •1

Statistics

10/23/23

construct a 95% confidence interval.

If n = 200 and p^ (p-hat) = 0.8, construct a 95% confidence interval.Give your answers to three decimal

Follows • 1

Answers •1

Statistics

10/23/23

Find the margin of error of this poll, at the 90% confidence level.

In a recent poll, 330 people were asked if they liked dogs, and 57% said they did. Find the margin of error of this poll, at the 90% confidence level.Give your answer to three decimals

Follows • 1

Answers •1

Statistics

10/23/23

How large of a sample size is required?

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p∗=78%. You would like to be 95% confident that... more

Follows • 1

Answers •1

If n=530 and p' (p-prime) = 0.78, construct a 90% confidence interval. Give your answers to three decimals. ________< p < ________

If n=15, ¯x(x-bar)=41, and s=9, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population.

If n=530 and p' (p-prime) = 0.78, construct a 90% confidence interval. Give your answers to three decimals.

What is the p-value and positive significance level?

A person going to a party was asked to bring 2 different bags of chips. Going to the store, she finds 15 varieties. How many different selections can she make?

Null and Alternative Hypotheses

Null and Alternative Hypotheses

What is the elements of the hypothesis testing?

Statistics Question

Adult IQ percentage

Human body temperatures are normally distributed with a mean.

Maths/statistics

CNNBC recently reported that the mean annual cost of auto insurance is 1029 dollars. Assume the standard deviation is 219 dollars. You take a simple random sample of 60 auto insurance policies.

business statistics

A population of values has a normal distribution with μ = 35.8 and σ = 48.2 . You intend to draw a random sample of size n = 102

How do i go about solving this? i was sick and missed class, but the notes dont seem to be helping

please help me answer this

Assume that a procedure yields a binomial distribution with a trial repeated times.

With one method of a procedure called acceptance sampling

The table summarizes results from 985 pedestrian deaths that were caused by automobile accidents

how do I solve this step by step and what is the final answer

Express the confidence interval 33.8% < p < 45.4% in the form of p^ +- ME

construct a 95% confidence interval.

Find the margin of error of this poll, at the 90% confidence level.

How large of a sample size is required?

Still looking for help? Get the right answer, fast.

OR

RELATED TOPICS

RELATED QUESTIONS

statistics

statistics

I need a creative ideas

RECOMMENDED TUTORS

find an online tutor

If n=530 and p' (p-prime) = 0.78, construct a 90% confidence interval. Give your answers to three decimals. < p <