[6] Question 4 1. What sample size should be taken from a population of toothpaste tubes, with weight that has a standar

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6 Question 4 1 What Sample Size Should Be Taken From A Population Of Toothpaste Tubes With Weight That Has A Standar 1 (111.43 KiB) Viewed 30 times

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[6] Question 4 1. What sample size should be taken from a population of toothpaste tubes, with weight that has a standard deviation of 3g, to estimate the mean weight to within 0.4g, with 95% confidence? 98% Z = 2.326 (3) 2. A market research company wishes to estimate the percentage of people in a certain age bracket who read a current affairs magazine. The degree of accuracy required for the sample is 94%. What size sample should be taken to estimate the percentage to within 4% a (3) 94% z=1.881