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Probability Problem

A company finds that on average 20% of all new employees resign during their first year of employment. Find the probability that, among the next 30 employees hired, exactly five will resign during their first year of employment.

Subject:

Statistics

Topic:

All Topics

Posting ID:

2105

OTA ID:

102799

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Mean and Standard Deviation

X ~ B (1603, 0.57). Find the mean and the standard deviation of X.

Subject:

Statistics

Topic:

All Topics

Posting ID:

2106

OTA ID:

102799

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Find the mean and standard deviation of X:

The random variable X is the number of houses per month sold by a realtor. The probability distribution is given below. Find the mean and standard deviation of X: X (houses sold) / f(x) ____________________________________________ (0 , 0.24) (1 , 0.01) (2 , 0.12) (3 , 0.16) (4 , 0.01) (5 , 0.14) (6 , 0.11) (7 , 0.21)

Subject:

Statistics

Topic:

All Topics

Posting ID:

2108

OTA ID:

102454

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Unusual Result

A candy company claims that 92% of consumers like their candies. To test this claim, 9571 people are selected at random from those who have eaten the company's candies. 791 rate the candies as unsatisfactory. Is this an unusual result (show criterion for determining the answer to this question)? Also, how do you interpret your statistical result in terms of the company's claim.

Subject:

Statistics

Topic:

All Topics

Posting ID:

2109

OTA ID:

102454

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Poisson Distribution

The number of calls to a taxi service averages 14.4 per 24-hour day. Using the poisson distribution, find the probability that, in a randomly selected hour, no calls will be received.

Subject:

Statistics

Topic:

All Topics

Posting ID:

2110

OTA ID:

102799

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