1) The local Tupperware dealers earned these commissions last month: $2965

Subject:MathPrice: Bought3

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1) The local Tupperware dealers earned these commissions last month:

$2965.95 $2743.78 $2972.72 $3591.18 $ 4897.62 $4202.64 $1330.73 $2341.77 $4722.08 $2260.74

What was the mean commission earned? Round your answer to the nearest cent.

1.$3202.92

2.$3196.92

3.$3558.80

4.$4003.65

 

2.A hypothesis test is to be performed. Describe the two possible outcomes of the test using the context of the given situation.

 

A health insurer has determined that the "reasonable and customary" fee for a certain medical procedure is   They suspect that the average fee charged by one particular clinic for this procedure is higher than   The insurer wants to perform a hypothesis test to determine whether their suspicion is correct.

The hypothesis tests are as follows: 

Null hypothesis: mean fee = $1200

Alternative hypothesis: mean fee > $1200

 

1. Rejecting the null hypothesis means there is evidence that the mean fee is not equal to $1200. Failing to reject the null hypothesis means there is insufficient evidence to conclude that the mean fee is greater than $1200.
2. Rejecting the null hypothesis means there is evidence that the mean fee is greater than $1200. Failing to reject the null hypothesis means there is insufficient evidence to conclude that the mean fee is equal to $1200.
3. Rejecting the null hypothesis means there is evidence that the mean fee is greater than $1200. Accepting the null hypothesis means there is evidence to conclude that the mean fee is equal to $1200.
4. Rejecting the null hypothesis means there is evidence that the mean fee is greater than $1200. Failing to reject the null hypothesis means there is insufficient evidence to conclude that the mean fee is greater than $1200.

 

3.Find a 95% confidence interval for the true population proportion.

 

In a survey of 257 female employees of a large company, 21% said that they had experienced some form of sexual harassment while working for the company.

1.8.5% to 33.5%

2.14.8% to 27.2%

3.20.9% to 21.1%

4.20.6% to 21.4%

 

4.Identify the distribution as symmetric, left-skewed, or right-skewed.

 

Age at death for residents of the U.S.

1.Left-skewed

2.Symmetric

3.Right-skewed