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A local business school claims that its graduating seniors get higher-paying jobs than the national average for business school graduates. Last year's figures for salaries paid to all business school graduates on their first job showed a mean of $10.20 per hour. A random sample of 10 graduates from last year's class of the local business school showed the following hourly salaries for their first job: $9.40, $10.30, $11.20, $10.80, $10.40, $9.70, $9.80, $10.60, $10.70, $10.90. You are skeptical of the business school claim and decide to evaluate the salary of the business school graduates, using ?= 0.05 (2-tail) what do you conclude?
a light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 875 hours .a random
How many variables are there in this study? What are the levels of any variable you identified?- What hypothesis test would be used to analyze these data? Justify your answer.
Based on chi-square table, what is the most correct statement which can be made about the p-value for the test?
a scientist testifying before a congressional hearing on the effects of estrogenic pesticides told every man in the
The number of UFO (Unidentified Flying Object) sightings per week in Roswell, NM is a random variable with the cumulative distribution function given below.
Burning calories with exercise. Table 28.13 provides data on speed and calories burned per hour for a 175- pound male using two different treadmills (a Cybex and a LifeFitness) at inclines of 0%, 2%, and 4%
the management of red cat computers was considering launching a new product called the tiger 100. the problem was that
If one investment can give you $1200 with a probability of .20 and you could lose $800 with a probability of .80, and another investment can give you $600 with a probability of .70 and a loss of $300 with a probability of .30, which investment is ..
They select every 20th person from the list until a sample of 100 is obtained. They then call these 100 people. Does this sampling plan result in a random sample? Simple random sample? Explain.
a two-stage clinical trial is planned for for testing h0 p0.10 versus ha pgt0.10 where p is the proportion of
Compute the effect size with gender as the grouping variable and ADDSC as the dependent variable.
(a) Find the joint probability density function of X1 and X2.
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