Question

Joyce wants to determine the percentage of first-time customers in the population at 95% confidence level. Use the table below to answer questions 3 to 6. First-time customer Cumulative Percent Frequency Percent Valid Percent Valid Yes 49 24.3 26.1 26.1 73.9 No 139 68.8 100.0 Total 188 93.1 100.0 -99 14 6.9 Missing Total 202 100.0

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Question 32 pts

What is the valid sample size for this question?

Group of answer choices

49

24.3

188

202

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Question 42 pts

What is the valid percentage of first-time customers in this sample?

Group of answer choices

73.9%

24.3%

26.1%

68.8%

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Question 52 pts

Calculate the standard error using the information from Q3 and Q4 (round to the second decimal place).

Group of answer choices

0.02

0.03

0.05

0.04

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Question 62 pts

The z-score at 95% confidence level is 1.96. Use the information from Q3 and Q5, calculate the confidence interval for the percentage of first-time customers in the population (round to the second decimal place).

Group of answer choices

(18%, 34%)

(20%, 32%)

(20%, 34%)

(18% 32%)

Answer 1

32] 8 77 Here we valid can see somple size is 188. in the column of valid 42] valid %. = 26.1 [ clearly mention ] 52] Here p = 0.261 , n= 88 188 | | 6 - 6) = (o: 260 (0139 In v 188 20.03 This the std. ener 627 ↑ + 2 (SE) 0.261 + (1.96) (0.03) (0.261 + 0.0588) (0.20 0.32) (20% 32%) Option (2) is right