I need doo fast typing clear urjent no chatgpt used i will give 5 upvotes pls full explain with all 23) Based on past data, the sample mean of the credit card purchases at a large department store is $35. Assuming sample size ispopulation standard deviation is 10.a)b)(၁d)What % of samples are likely to have between 20 and 30?Between what two values 90% of sample means fall?Below what value 99% of sample means fall?Above what value only 1% of sample means fall??Within what symmetrical limits of the population percentage will 95% of the sample percentages fall?

Ans a)We first get the z score for the two values. As z = (x - u) sqrt(n) / s, then asx1 = lower…

Answered: 23) Based on past data, the sample mean…

Principles Of Marketing

17th Edition

ISBN:9780134492513

Author:Kotler, Philip, Armstrong, Gary (gary M.)

Publisher:Kotler, Philip, Armstrong, Gary (gary M.)

Chapter1: Marketing: Creating Customer Value And Engagement

Section: Chapter Questions

Problem 1.1DQ

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please explain the following random sampling methods along with giving examples for each in a business context situation. a) Systematic random sample b) Stratified Sample c) Cluster Sample
According to Reader's Digest, 47% of primary care doctors think their patients receive unnecessary medical care. Use z-table. a. Suppose a sample of 310 primary care doctors was taken. Show the sampling distribution of the proportion of the doctors who think their patients receive unnecessary medical care. E(F) (to 4 decimals) b. What is the probability that the sample proportion will be within ±0.03 of the population proportion. Round your answer to four decimals. c. What is the probability that the sample proportion will be within 0.05 of the population proportion. Round your answer to four decimals. d. What would be the effect of taking a larger sample on the probabilities in parts (b) and (c)? Why? The probabilities would - Select your answer - This is because the increase in the sample size makes the standard error, Op . - Select your answer - ♥
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2. The sample mean is both an unbiased and consistent estimator of the population mean.In plain language, describe the meaning of these terms.3. Standard deviationa. Explicitly write out the formula for a sample standard deviation (you can useeither Word’s equation editor or hand write it and paste a screenshot of yourhandwritten formula).b. Using the following table, explicitly calculate the deviation from the mean for thetwo blank boxes where “DIFF from MEAN” = Cancer Death - MEAN.

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