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Elementary Statistics: Hypothesis Testing

See attachment. Elementary statistics. Please provide me solutions with formulas and calculations. Its required that you provide step by step solutions to that I can compare my answers and fill in the attached answer sheet. Hypothesis testing on charitable donations, cigarette smoking, and small businesses.

Subject:

Statistics

Topic:

All Topics

Posting ID:

6267

OTA ID:

103234

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Normal distribution and significance levels

True or false: The value for a chi square right for a 95% confidence interval when n = 16 is 27.488.

Subject:

Statistics

Topic:

All Topics

Posting ID:

6293

OTA ID:

101733

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Significance levels, mean, z score, and standard deviation

True or false: Fred wants to calculate the 98% confidence interval around the mean using the z-distribution. His sample of 64 items has a mean of 35 and a standard deviation of 6. The maximum error of estimate would be 0.218.

Subject:

Statistics

Topic:

All Topics

Posting ID:

6294

OTA ID:

102156

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Normal distribution and significance levels

True or false: A retailer wants to estimate with 99% confidence the number of people who buy at his store. A previous study showed that 15% of those interviewed had shopped at his store. He wishes to be accurate within 3% of the true proportion. The minimum sample size necessary would be 940.

Subject:

Statistics

Topic:

All Topics

Posting ID:

6295

OTA ID:

103506

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Normal Distribution

A tornado has blown through a section of Collinsville. The insurance adjuster wants to estimate the average claim to within $500. If the standard deviation is believed to be $1600 and the company wants to be 99% sure of their figures, how large a sample must be taken?

Subject:

Statistics

Topic:

All Topics

Posting ID:

6296

OTA ID:

101298

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