SalesProbability

What does the management expect the sales to be next year?

**1 points **

By comparing the expected profits for each venture, determine whether the company should bid for the rights in city

**1 points **

**1 points **

Video- cassettes01234Probability0.420.370.130.040.04

**1 points **

*x*012345*P*(*X* = *x*)

**1 points **

a. cents

**1 points **

Compute this student’s grade point average.

Let the random variable *X* denote the number of points corresponding to a given letter grade. Find the probability distribution of the random variable *X* and compute *E*( *X*), the expected value of *X*.

**1 points **

a.

**1 points **

a.0.4622b.0.4615c.0.4647d.0.4460

**1 points **

Based on these estimates, what will be the company’s expected gross profit?

TWO

*x*–2–1012*P ( X = x )*

Compute the mean, variance, and standard deviation of *X*.

**1 points **

a.3

**1 points **

a.Var ( *X*) = 4.2625

**1 points **

Year1981198219831984198519861987198819891990Birthrate15.915.515.515.715.715.615.715.916.216.7

(The birthrate is the number of live births/1,000 population.)

Compute the mean, variance, and standard deviation of the random variable *X*.

a.

**1 points **

Mutual Fund A

ReturnsProbability-40.280.3100.5

Mutual Fund B

ReturnsProbability-20.260.680.2

Compute (in dollars) the mean and variance for each mutual fund.

Mutual Fund B:

Mutual Fund B:

Mutual Fund B:

**1 points **

Year19951996199719981999200020012002Americans40.541.443.644.740.239.241.143

What is the standard deviation of Americans without health insurance in the period from 1995 through 2002?

a. million

**1 points **

a.At least

**1 points **

Compute the standard deviation of the maximum price (in thousands of dollars) that these buyers were willing to pay for a house. Round the answer to the nearest integer.

Maximum Price Considered, 150160170180190220250270320a.

**1 points **

Scores90-9980-8970-7960-6950-59Students381351

Find the mean and the standard deviation of the distribution of the given data. *Hint:* Assume that all scores lying within a group interval take the midvalue of that group.

a.

**1 points **

a.At least 0.8

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