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Consider a population having a standard deviation equal to 9.96. We wish to estimate the mean...
3. value: 10.00 points The manufacturer of the ColorSmart-5000 television set claims 95 percent of its...
3. value: 10.00 points The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 352 consumers who have owned a ColorSmart-5000 television set for five years. Of these 352 consumers, 310 say their ColorSmart-5000 television sets did not need a repair, whereas 42 say their ColorSmart-5000 television sets did need at least one repair. (a) Find...
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find...
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error =$5,standard deviation=$25 The required sample size is ????? (Round up to the nearest whole number as needed.)
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find...
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error equals=$66, standard deviation equals=$2222 The required sample size is _____. (Round up to the nearest whole number as needed.)
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find...
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of errorequals $3, standard deviationequals $23 The required sample size is nothing . (Round up to the nearest whole number as needed.)
If you wish to estimate a population mean with a margin of error MEequals=0.33 using a...
If you wish to estimate a population mean with a margin of error MEequals=0.33 using a 95% confidence interval and you know from prior sampling that σ2 is approximately equal to 4.6 how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (______) (Round up to the nearest observation.)
If you wish to estimate a population mean with a margin of error ME=0.24 using a...
If you wish to estimate a population mean with a margin of error ME=0.24 using a 95% confidence interval and you know from prior sampling that sigma squaredσ2 is approximately equal to 4.84, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (_______) (Round up to the nearest observation.)
If you wish to estimate a population mean with a margin of error ME=0.24 using a...
If you wish to estimate a population mean with a margin of error ME=0.24 using a 95% confidence interval and you know from prior sampling that sigma squaredσ2 is approximately equal to 4.8, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is __________. (Round up to the nearest observation.)
Suppose that a simple random sample is taken from a normal population having a standard deviation...
Suppose that a simple random sample is taken from a normal population having a standard deviation of 11 for the purpose of obtaining a 95% confidence interval for the mean of the population. a. If the sample size is 16, obtain the margin of error. b. Repeat part (a) for a sample size of 81. a. The margin of error for a sample size of 16 is ??? (Round to two decimal places as needed.) b. The margin of error...
A population is estimated to have a standard deviation of 12. We want to estimate the...
A population is estimated to have a standard deviation of 12. We want to estimate the population mean within 2, with a 95% level of confidence. How large a sample is required? (Round up your answer to the next whole number.)
If you wish to estimate a population mean with a sampling distribution error SE= 0.33 using...
If you wish to estimate a population mean with a sampling distribution error SE= 0.33 using a 95% confidence interval and you know from prior sampling that is approximately equal to 7.6, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (Round up to the nearest observation.)
3. value: 10.00 points The manufacturer of the ColorSmart-5000 television set claims 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 352 consumers who have owned a ColorSmart-5000 television set for five years. Of these 352 consumers, 310 say their ColorSmart-5000 television sets did not need a repair, whereas 42 say their ColorSmart-5000 television sets did need at least one repair. (a) Find...
If you wish to estimate a population mean with a sampling distribution error SE= 0.33 using a 95% confidence interval and you know from prior sampling that is approximately equal to 7.6, how many observations would have to be included in your sample? The number of observations that would have to be included in your sample is (Round up to the nearest observation.)
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