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A simple random sample of 5 observations from a population containing 400 elements with μ= 20 was taken, and the following values were obtained.12, 18, 19, 20, 21A point estimate of the population mean is ____________.

The level of significance in hypothesis testing is the probability of ___________________________________________________________.

A random sample of 25 statistics examinations was taken. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is _____________. (Z value is 2.576.)Refer to the following formula.σx = σnz = x-μσxStandard Error = σnMargin of Error = zα/2 * σnConfidence Interval = x ± zα/2*σn

Products are what the customer buys, how they differentiate the item sold, and evokes emotions and preferences. Brands on the other hand are what the company makes, rather homogeneous in nature, and are limited in their functionality. 

Solve.In a large city, 0.919 of the budget went toward city workers’ salaries. Write this decimal as a percent.

Insert , or = between the pair of numbers to form a true statement.455.030 _____ 455.003

Solve. + 1 = – 7

Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.5(4r + 8 + 3s)

Round the decimal to the given place value.8.180, nearest tenth

Solve the equation for the indicated variable.V = Ahfor A