Z-Distribution Intervals Collette is self-employed, selling items at Home Interior parties. She wants to estimate the average amount a client spends at each party. A random sample of 35 clients' receipts gave a sample mean of $34.70 and historically we know the population standard deviation of spending at these parties to be $4.85. Explain why you may assume your data is normally distributed. Find a 90% confidence interval for the average amount any given client can be expected to spend at a party. Write a brief explanation of the meaning of the confidence interval in the context of this problem
Z-Distribution Intervals
Collette is self-employed, selling items at Home Interior parties. She wants to estimate the average amount a client spends at each party. A random sample of 35 clients' receipts gave a sample mean of $34.70 and historically we know the population standard deviation of spending at these parties to be $4.85.
Explain why you may assume your data is
Find a 90% confidence interval for the average amount any given client can be expected to spend at a party.
Write a brief explanation of the meaning of the confidence interval in the context of this problem
For a party with 35 clients, use part (b) to estimate a
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