Question

In: Statistics and Probability

A program was created to randomly choose customers at a clothing store to receive a discount....

A program was created to randomly choose customers at a clothing store to receive a discount. The program claims 22% of the receipts will get a discount in the long run. The owner of the clothing store is skeptical and believes the program's calculations are incorrect. He selects a random sample and finds that 17% received the discount. The confidence interval is 0.17 ± 0.05 with all conditions for inference met.

Part A: Using the given confidence interval, is it statistically evident that the program is not working? Explain. (3 points)

Part B: Is it statistically evident from the confidence interval that the program creates the discount with a 0.22 probability? Explain. (2 points)

Part C: Another random sample of receipts is taken. This sample is five times the size of the original. Seventeen percent of the receipts in the second sample received the discount. What is the value of margin of error based on the second sample with the same confidence level as the original interval? (2 points)

Part D: Using the margin of error from the second sample in part C, is the program working as planned? Explain. (3 points)

Solutions

Expert Solution

Answer:

NOTE:: I HOPE YOUR HAPPY WITH MY ANSWER....***PLEASE SUPPORT ME WITH YOUR RATING...

***PLEASE GIVE ME "LIKE"...ITS VERY IMPORTANT FOR ME NOW....PLEASE SUPPORT ME ....THANK YOU

orchestra answered 2 years ago
Next > < Previous

Related Solutions

A program was created to randomly choose customers at a clothing store to receive a discount....
A program was created to randomly choose customers at a clothing store to receive a discount. The program claims 22% of the receipts will get a discount in the long run. The owner of the clothing store is skeptical and believes the program's calculations are incorrect. He selects a random sample and finds that 17% received the discount. The confidence interval is 0.17 ± 0.05 with all conditions for inference met. Part A: Using the given confidence interval, is it...
A program was created to randomly choose customers at a shoe store to receive a discount....
A program was created to randomly choose customers at a shoe store to receive a discount. The program claims 15% of the receipts will get a discount in the long run. The manager of the shoe store is skeptical and believes the program's calculations are incorrect. She selects a random sample and finds that 12% received the discount. The confidence interval is 0.12 ± 0.05 with all conditions for inference met. Part A: Using the given confidence interval, is it...
The records for the Clothing Department of Bridgeport’s Discount Store are summarized below for the month...
The records for the Clothing Department of Bridgeport’s Discount Store are summarized below for the month of January. Inventory, January 1: at retail $24,700; at cost $17,000 Purchases in January: at retail $134,900; at cost $89,932 Freight-in: $9,100 Purchase returns: at retail $3,000; at cost $2,300 Transfers in from suburban branch: at retail $12,900; at cost $6,900 Net markups: $7,900 Net markdowns: $4,000 Inventory losses due to normal breakage, etc.: at retail $500 Sales revenue at retail: $94,600 Sales returns:...
The records for the Clothing Department of Sharapova’s Discount Store are summarized below for the month...
The records for the Clothing Department of Sharapova’s Discount Store are summarized below for the month of January. Inventory, January 1: at retail $25,000; at cost $17,000 Purchases in January: at retail $137,000; at cost $82,500 Freight-in: $7,000 Purchase returns: at retail $3,000; at cost $2,300 Transfers in from suburban branch: at retail $13,000; at cost $9,200 Net markups: $8,000 Net markdowns: $4,000 Inventory losses due to normal breakage, etc.: at retail $400 Sales revenue at retail: $95,000 Sales returns:...
The records for the Clothing Department of Concord’s Discount Store are summarized below for the month...
The records for the Clothing Department of Concord’s Discount Store are summarized below for the month of January. Inventory, January 1: at retail $25,100; at cost $16,900 Purchases in January: at retail $138,900; at cost $93,060 Freight-in: $7,100 Purchase returns: at retail $3,000; at cost $2,400 Transfers in from suburban branch: at retail $13,000; at cost $9,100 Net markups: $8,000 Net markdowns: $3,900 Inventory losses due to normal breakage, etc.: at retail $500 Sales revenue at retail: $93,300 Sales returns:...
The records for the Clothing Department of Metlock’s Discount Store are summarized below for the month...
The records for the Clothing Department of Metlock’s Discount Store are summarized below for the month of January. Inventory, January 1: at retail $25,100; at cost $17,200 Purchases in January: at retail $135,800; at cost $86,906 Freight-in: $9,400 Purchase returns: at retail $2,900; at cost $2,300 Transfers in from suburban branch: at retail $13,100; at cost $7,000 Net markups: $8,000 Net markdowns: $3,900 Inventory losses due to normal breakage, etc.: at retail $500 Sales revenue at retail: $96,900 Sales returns:...
In a particular retail clothing store, approximately 30% of potential customers who walk into the store...
In a particular retail clothing store, approximately 30% of potential customers who walk into the store make a purchase. In a random sample of 25 customers that walked into the store, a. what is the probability that exactly 10 of the customers make purchases? Round to 3 significant digits. b. what is the probability that at least 2 of the customers make purchases? Round to 3 significant digits. c. how many of the customers are expected to make purchases? Round...
A store surveys customers to see if they are satisfied with the service they receive. Samples...
A store surveys customers to see if they are satisfied with the service they receive. Samples of 75 surveys are taken. One in six people are unsatisfied. What is the variance of the mean of the sampling distribution of sample proportions for the number of unsatisfied customers? What is the variance for satisfied customers?
A certain store gives its customers a discount on the goods they buy based on a...
A certain store gives its customers a discount on the goods they buy based on a peculiar manner. The discount percentage is equal to each customer's remainder of weight to age, weight % age. The maximum discount percentage allowed is 10. If the remainder is greater than 10, the discount percentage is recomputed as the remainder of 10. For example, a customer whose weight is 175 lbs and age 61, buys an item costing $60.97. The discount percentage = 175...
At two different branches of a department store, pollsters randomly sampled 100 customers at store 1...
At two different branches of a department store, pollsters randomly sampled 100 customers at store 1 and 80 customers at store 2, all on the same day. At store 1, the average amount purchased was $41.25 per customer with a sample standard deviation of $24.25. At store 2 the average amount purchased was $45.75 with a sample standard deviation of $34.76. a) Construct a 95% confidence interval for the mean amount purchased per customer in Store 1 and Store 2....
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT