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Homework Answers
We have given that,
Sample mean =53
Sample standard deviation =12
Sample size =24
Level of significance=1-0.90=0.1
Degree of freedom =23
t critical value is (by using t table)=1.714
.
Lower confidence limit= 48.80
Upper confidence limit= 57.20
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A simple random sample of size n = 400 individuals who are currently employed is asked if they work at home at least once per week. Of the 400 employed individuals surveyed, 42 responded that they did work at home at least once per week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at...
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B Question Help A survey asked, "How many tattoos do you currently have on your body?" Of the 1249 males surveyed, 176 responded that they had at least one tattoo. Of the 1060 females surveyed, 129 responded that they had at least one tattoo. Construct a 90% confidence interval to judge whether the proportion of males that...
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Determine the sample size required to estimate the mean score on a standardized test within 2 points of the true mean with 95% confidence. Assume that s = 17 based on earlier studies. O A. 278 OB. 17 O C. 1 OD. 376
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A simple random sample of size n= 36 is obtained from a population with u = 84 and o = 24. (a) Describe the sampling distribution of x. (b) What is P ( >90.2)? (c) What is P (X576) ? (d) What is P (81<x<90) ? (a) Choose the correct description of the shape of the sampling distribution of x. O A....
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A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 1048 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.29 hours with a standard deviation of 0.54 hour. Complete parts (a) through (d) below. (a) A histogram of time spent eating and drinking...
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Describe the sampling distribution of p. Assume the size of the population is 20,000. n=400, p=0.6 Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Approximately normal because ns 0.05N and np(1-p) < 10 O B. Not normal because ns0.05N and np(1-p) 10. OC. Approximately normal because ns 0.05N and np(1 - p) 210....
Need help with stats. RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW...
Need help with stats.
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A simple random sample of size n= 44 is obtained from a population with u = 61 and o = 19 (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling distribution of x....
A simple random sample of size n=21 is drawn from a population that is normally distributed....
A simple random sample of size n=21 is drawn from a population that is normally distributed. The sample mean is found to be x= 68 and the sample standard deviation is found to be s = 18. Construct a 90% confidence interval about the population mean. The lower bound is The upper bound is (Round to two decimal places as needed.)
A simple random sample of size n=21 is drawn from a population that is normally distributed....
A simple random sample of size n=21 is drawn from a population that is normally distributed. The sample mean is found to be x = 58 and the sample standard deviation is found to be s = 17. Construct a 90% confidence interval about the population mean. The lower bound is The upper bound is (Round to two decimal places as needed.)
A simple random sample of size nis drawn from a population that is normally distributed the...
A simple random sample of size nis drawn from a population that is normally distributed the sample mean is found to be 113, and the sample standard deviations, is found to be 10 (a) Construct a 95% confidence interval about if the sample size is 22 (b) Construct a 95% confidence interval about the sample on 26 (c) Construct a 90% confidence interval about the sample size is 22 (d) Could we have computed the confidence intervals in parts(a-c) if...
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A simple random sample of size n = 400 individuals who are currently employed is asked if they work at home at least once per week. Of the 400 employed individuals surveyed, 42 responded that they did work at home at least once per week. Construct a 99% confidence interval for the population proportion of employed individuals who work at home at...
RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW TAB"
FOR A LARGER CLEARER IMAGE. WILL UPVOTE ANY HELP, THANKS
B Question Help A survey asked, "How many tattoos do you currently have on your body?" Of the 1249 males surveyed, 176 responded that they had at least one tattoo. Of the 1060 females surveyed, 129 responded that they had at least one tattoo. Construct a 90% confidence interval to judge whether the proportion of males that...
RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW TAB"
FOR A LARGER CLEARER IMAGE.
Determine the sample size required to estimate the mean score on a standardized test within 2 points of the true mean with 95% confidence. Assume that s = 17 based on earlier studies. O A. 278 OB. 17 O C. 1 OD. 376
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A simple random sample of size n= 36 is obtained from a population with u = 84 and o = 24. (a) Describe the sampling distribution of x. (b) What is P ( >90.2)? (c) What is P (X576) ? (d) What is P (81<x<90) ? (a) Choose the correct description of the shape of the sampling distribution of x. O A....
RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW TAB"
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A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 1048 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.29 hours with a standard deviation of 0.54 hour. Complete parts (a) through (d) below. (a) A histogram of time spent eating and drinking...
RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW TAB"
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Describe the sampling distribution of p. Assume the size of the population is 20,000. n=400, p=0.6 Choose the phrase that best describes the shape of the sampling distribution of p below. O A. Approximately normal because ns 0.05N and np(1-p) < 10 O B. Not normal because ns0.05N and np(1-p) 10. OC. Approximately normal because ns 0.05N and np(1 - p) 210....
Need help with stats.
RIGHT CLICK ON THE IMAGE AND SELECT "OPEN IMAGE IN A NEW TAB"
FOR A LARGER CLEARER IMAGE.
A simple random sample of size n= 44 is obtained from a population with u = 61 and o = 19 (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling distribution of x....
A simple random sample of size n=21 is drawn from a population that is normally distributed. The sample mean is found to be x= 68 and the sample standard deviation is found to be s = 18. Construct a 90% confidence interval about the population mean. The lower bound is The upper bound is (Round to two decimal places as needed.)
A simple random sample of size n=21 is drawn from a population that is normally distributed. The sample mean is found to be x = 58 and the sample standard deviation is found to be s = 17. Construct a 90% confidence interval about the population mean. The lower bound is The upper bound is (Round to two decimal places as needed.)
A simple random sample of size nis drawn from a population that is normally distributed the sample mean is found to be 113, and the sample standard deviations, is found to be 10 (a) Construct a 95% confidence interval about if the sample size is 22 (b) Construct a 95% confidence interval about the sample on 26 (c) Construct a 90% confidence interval about the sample size is 22 (d) Could we have computed the confidence intervals in parts(a-c) if...
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