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The number of people in a car that crosses a certain bridge is represented by the random variable X, which has a mean value μX = 2.7, and a variance σ2X = 1.2. The toll on the bridge is $3.00 per car plus $ .50 per person in the car. The mean and variance of the total amount of money that is collected from a car that crosses the bridge are:
a) Mean = $1.35, variance = $ .30.
b) Mean = $8.60, variance = $ .30.
c) Mean = $8.60, variance = $ .60.
d) Mean = $4.35, variance = $3.30.
e) Mean = $4.35, variance = $ .30.
At.05 level of significance, is there sufficient evidence to conclude that difference exists between proportion of cats and proportion of dogs which sleep more than 10 hours per day?
According to Advertising Age, average base salary for women working as copywriters in advertising firms is higher than average base salary for men. The average base salary for women is $67,000 and the average base salary for men is $65,500 (Workin..
To demonstrate the process is in control or out of control utilizing p-chart. A company which produces nails has retained you as a consultant.
In a distribution of scores, the arithmetic mean is 51, the median is 55, and the mode is 62. What is the score, in percentile form, of a subject who does less well than two-thirds of the sample?
Determine the probability that person selected has blood type O? Given that person selected is a male, determine the probability that their blood type is AB?
What is the probability of this actually happening?
Find out sample standard deviation (s) of scores Gordon Golfer made on his last four rounds (determine to the nearest one tenth, or .1).
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
Compute the difference scores for following data from repeated-measures study.
Find the critical F value for the Following,
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
It is known that 60 percent of all registered voters in the 42nd congressional District are Republicans. There registered voters are selected at random from the district. Compute the probability that exactly 2 of the 3 selected are Republicans, u..
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