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A national computer retailer believes that the average sales are greater for salespersons with a college degree. A random sample of 34 salespersons with a degree had an average weekly sale of $3622 last year, while 31 salespersons without a college degree averaged $3199 in weekly sales. The standard deviations were $468 and $642 respectively. Is there evidence at the 5% level to support the retailer's belief?
Select the [p-value, Decision to Reject (RH0) or Failure to Reject (FRH0)].
a) [p-value = 0.003, FRH0]
b) [p-value = 0.001, RH0]
c) [p-value = 0.015, RH0]
d) [p-value = 0.015, FRH0]
e) [p-value = 0.003, RH0]
fx k1-1x2 1 ? x lt 2 is the distribution function for a continuous random variable x. solve for the value of k and
Solve the linear programming model by using the computer. Identify the sensitivity ranges for the objective function coefficients and explain what the upper and lower limits are.
A student scores 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8.
Provide an appropriate statistical description and summary of this data set; comment on any distinctive characteristics and postulate potential explanations for your observation.
for a certain river suppose the drought length y is the number of consecutive time intervals in which the water supply
1. in a study of the income of u.s. factory workers a random sample of 100 workers shows a sample mean of 35000. assume
A bridge hand consists of 13 cards dealt at random from an ordinary deck of 52 playing cards. How many possible bridge hands are there?
If the coefficient of restitution between the ball and the block is e =0.8 , determine the maximum height h to which the block will swing before it momentarily stops.
(a) Define the two populations and then formulate the appropriate null and alternative hypothesis for the test. (b) Conduct a hypothesis test at the 10% level of significance to test the null hypothesis. (c) What statistical and management conclusion..
Suppose that an odd number of individuals have single-peak preferences. Explain why the most- preferred alternative of the median voter will defeat every other proposal by a majority votes
Develop a suitable tabular form and graphical bar charts of the HLE, G, FS and frequency - Explain the differences and similarities of range and IQR?
What is the probability of drawing two diamonds after discarding 5 and 7.
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