You measure 40 watermelons' weights, and find they have a mean weight of 78 ounces. Assume...
You measure 40 watermelons' weights, and find they have a mean weight of 78 ounces. Assume the population standard deviation is 4.8 ounces. Based on this, construct a 95% confidence interval for the true population mean watermelon weight. Give your answers as decimals, to two places
Homework Answers
Here population standard deviation is known so we will use z distribution to find CI
z value for 95% CI is 1.96 as P(-1.96<z<1.96)=0.95
So Margin of Error is 
Hence CI is 
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You measure 40 watermelons' weights, and find they have a mean
weight of 78 ounces. Assume...
You measure 46 watermelons' weights, and find they have a mean weight of 78 ounces. Assume...
You measure 46 watermelons' weights, and find they have a mean weight of 78 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 90% confidence interval for the true population mean watermelon weight. Give your answers as decimals, to two places ______________ ± ______________ ounces
a. You measure 43 watermelons' weights, and find they have a mean weight of 48 ounces....
a. You measure 43 watermelons' weights, and find they have a mean weight of 48 ounces. Assume the population standard deviation is 2.2 ounces. Based on this, what is the maximal margin of error associated with a 95% confidence interval for the true population mean watermelon weight? Give your answer as a decimal, to two places ± ounces b. You measure 25 watermelons' weights and find they have a mean weight of 44 ounces. Assume the population standard deviation is...
You measure 33 watermelons' weights, and find they have a mean weight of 61 ounces. Assume...
You measure 33 watermelons' weights, and find they have a mean weight of 61 ounces. Assume the population standard deviation is 14.9 ounces. Based on this, construct a 99% confidence interval for the true population mean watermelon weight.
You measure the weights of 47 watermelons and find they have a mean weight of 77...
You measure the weights of 47 watermelons and find they have a mean weight of 77 ounces. Assume the population standard deviation is 14.4 ounces Based on this , construct a 95% confidence interval for the true population mean watermelon weight. ____<μ<___ , use 3 decimal places. State in words what this means in context of the problem:
You measure 41 watermelons' weights, and find they have a mean weight of 61 ounces. Assume...
You measure 41 watermelons' weights, and find they have a mean weight of 61 ounces. Assume the population standard deviation is 11.7 ounces. Based on this, what is the maximal margin of error associated with a 90% confidence interval for the true population mean watermelon weight.
You measure 40 elephants' weights, and find they have a mean weight of 67 ounces. Assume...
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You measure 42 backpacks' weights, and find they have a mean weight of 67 ounces. Assume...
You measure 42 backpacks' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 14.4 ounces. Based on this, construct a 95% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ±± ounces
You measure 24 textbooks' weights, and find they have a mean weight of 33 ounces. Assume...
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You measure 49 textbooks' weights, and find they have a mean weight of 59 ounces. Assume...
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You measure 28 textbooks' weights, and find they have a mean weight of 76 ounces. Assume the population standard deviation is 12.3 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places
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