stats help
The following data are the amounts that a sample of
customers spent for lunch ($) at a fast-food restaurant. Complete parts (a) through (d) below.
Construct a %
confidence interval estimate for the population mean amount spent for lunch ($) at a fast-food restaurant.
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The following data are the amounts that a sample of 15 customers spent for lunch ($)...
The following data are the amounts that a sample of 15 customers
spent for lunch ($) at a fast-food restaurant. Complete parts
(a) through (d) below.
a. Construct a 95% confidence interval estimate
for the population mean amount spent for lunch ($) at a fast-food
restaurant.
b. Interpret the interval constructed in
(a).
c. What assumption must you make about the
population distribution in order to construct the confidence
interval estimate in (a)?
d. Do you think that the assumption...
The table below contains the amount that a sample of nine customers spent for lunch ($)...
The table below contains the amount that a sample of nine customers spent for lunch ($) at a fast-food restaurant. Complete parts a and b below. 4.32 5.06 5.69 6.44 7.18 7.78 8.41 8.67 9.67 a. Construct a 95% confidence interval estimate for the population mean amount spent for lunch at a fast-food restaurant, assuming a normal distribution.The % confidence interval estimate is from $ to $ b. Interpret the interval constructed in (a)
2. Textbook, Problem 8.18, P. 284. The table below contains the amount that a sample...
2. Textbook, Problem 8.18, P. 284. The table below contains the amount that a sample of nine customers spent for lunch ($) at a fast-food restaurant: 4.88 5.01 5.79 6.35 7.39 7.68 8.23 8.71 9.88 Compute the sample mean and sample standard deviation of the amount spent for lunch. Construct a 99% confidence interval estimate for the population mean amount spent for lunch ($) at the fast-food restaurant, assuming the population is normally distributed. Interpret the interval constructed...
Assuming that the population is normally distributed, construct a 99% confidence interval for the population mean...
Assuming that the population is normally distributed, construct a 99% confidence interval for the population mean for each of the samples below. Explain why these two samples produce different confidence intervals even though they have the same mean and range. Sample A: 1 3 3 4 5 6 6 8 Sample B: 1 2 3 4 5 6 7 8 Full data set Construct a 99% confidence interval for the population mean for sample A (Type integers or decimals rounded...
The amount that a sample of eight customers spent for lunch ($) at a fast-food restaurant...
The amount that a sample of eight customers spent for lunch ($) at a fast-food restaurant is shown below: 67, 52, 86, 52, 88, 32, 28, 43 a. Find the sample mean ??? b. Find the sample standard deviation S c. Construct a 95% confidence interval estimate for the population mean ?
İ Question Help * The table below contains the amou that a sample of nine customers...
İ Question Help * The table below contains the amou that a sample of nine customers spent for lunch i$ at a fast-food restamrant Complete parts a and b below 4.62 5.22 566 647 7.47 763 8.12 832 965 a. Constrctぁ95% oonfonce nterval estisile Or te population mean amont spet fork nch at a fast food restaurant assured a nonna aantain The % confieren niervol estrate is from S576 la S828 (Round to two decimal places as needed.) b. Interpret...
7.1.19-T In a study of the accuracy of fast food delive through orders, Restaurant Ahad 316...
7.1.19-T In a study of the accuracy of fast food delive through orders, Restaurant Ahad 316 accurate orders and 73 that were not accurate a. Construct a 95% confidence interval estimate of the percentage of orders that are not accurate b. Compare the results from part (a) to this 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.163<p<0.243. What do you conchide? a. Construct a 95% confidence interval Express the percentages in decimal...
A random sample of 13 customers in a Kentucky fast food restaurant revealed an average bill...
A random sample of 13 customers in a Kentucky fast food
restaurant revealed an average bill of OMR 18.75 per person. The
population standard deviation is OMR5.4. Estimate 98%
confidence
interval for the mean bill of all customers.
A random sample of ' n' customers in a Kentucky fast food restaurant revealed an average bill of OMR & per person. The population standard deviation is OMR 6. Estimate 98% confidence interval for the mean bill of all customers. n X...
3 The manufacturer of Ice Melt claims that its product will melt snow ani KZ temperatures...
3 The manufacturer of Ice Melt claims that its product will melt snow ani KZ temperatures as low as O" Celsius. A representative for a large chain of hardware stores is interested in testing this claim. The chain purchases a large shipment of s kilo bags for distribution. The representative wants to know, with 95%cofdene and within :005 degrees, whal proportion of bugs of le Melt perfoum the jpb a claimed by the manu facturer. (15 points) a. How many...
A market researcher collects a simple random sample o customers from a population o over a...
A market researcher collects a simple random sample o customers from a population o over a million customers that use a home improvement website. After analyzing the sample, she states that she has 95% confidence that the mean time customers spent on that website per day is between 17 and 52 minutes. Suppose that the population mean time customers spent on that website is 49 minutes a day. Does this value of the population mean help to show that the...
The following data are the amounts that a sample of 15 customers
spent for lunch ($) at a fast-food restaurant. Complete parts
(a) through (d) below.
a. Construct a 95% confidence interval estimate
for the population mean amount spent for lunch ($) at a fast-food
restaurant.
b. Interpret the interval constructed in
(a).
c. What assumption must you make about the
population distribution in order to construct the confidence
interval estimate in (a)?
d. Do you think that the assumption...
Assuming that the population is normally distributed, construct a 99% confidence interval for the population mean for each of the samples below. Explain why these two samples produce different confidence intervals even though they have the same mean and range. Sample A: 1 3 3 4 5 6 6 8 Sample B: 1 2 3 4 5 6 7 8 Full data set Construct a 99% confidence interval for the population mean for sample A (Type integers or decimals rounded...
İ Question Help * The table below contains the amou that a sample of nine customers spent for lunch i$ at a fast-food restamrant Complete parts a and b below 4.62 5.22 566 647 7.47 763 8.12 832 965 a. Constrctぁ95% oonfonce nterval estisile Or te population mean amont spet fork nch at a fast food restaurant assured a nonna aantain The % confieren niervol estrate is from S576 la S828 (Round to two decimal places as needed.) b. Interpret...
7.1.19-T In a study of the accuracy of fast food delive through orders, Restaurant Ahad 316 accurate orders and 73 that were not accurate a. Construct a 95% confidence interval estimate of the percentage of orders that are not accurate b. Compare the results from part (a) to this 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.163<p<0.243. What do you conchide? a. Construct a 95% confidence interval Express the percentages in decimal...
A random sample of 13 customers in a Kentucky fast food
restaurant revealed an average bill of OMR 18.75 per person. The
population standard deviation is OMR5.4. Estimate 98%
confidence
interval for the mean bill of all customers.
A random sample of ' n' customers in a Kentucky fast food restaurant revealed an average bill of OMR & per person. The population standard deviation is OMR 6. Estimate 98% confidence interval for the mean bill of all customers. n X...
3 The manufacturer of Ice Melt claims that its product will melt snow ani KZ temperatures as low as O" Celsius. A representative for a large chain of hardware stores is interested in testing this claim. The chain purchases a large shipment of s kilo bags for distribution. The representative wants to know, with 95%cofdene and within :005 degrees, whal proportion of bugs of le Melt perfoum the jpb a claimed by the manu facturer. (15 points) a. How many...
A market researcher collects a simple random sample o customers from a population o over a million customers that use a home improvement website. After analyzing the sample, she states that she has 95% confidence that the mean time customers spent on that website per day is between 17 and 52 minutes. Suppose that the population mean time customers spent on that website is 49 minutes a day. Does this value of the population mean help to show that the...
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