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You have 4 groups that you are trying to find if there is a difference in any of the population means. In each group there are 7 observations. The given level of significance is an alpha of .005. Your MSA is 6,200 and your MSW is 1,000. Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
A) You will reject the null hypothesis
B) You will not reject the null hypothesis
C) The critical value is 5.52
D) A and C
E) B and C
The mean salary of the nine employees of a small business is $52,000 per year. One employee, whose salary was $68,000, was red. Two new employees, who will each be paid a salary of $40,000, are hired. What is the new mean annual salary of the emp..
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
Give an example representing a discrete probability distribution and a continuous probability distribution. Explain why your choice is discrete and continuous.
In a study designed to test the effectiveness of acupuncture for treating migraine, 142 subjects were treated with acupuncture and 80 subjects were given a sham treatment. The numbers of migraine attacks for the acupuncture treatment group had a m..
In the game of roulette, a ball is dropped into a spinning wheel, finally landing on one of the wheel's 38 different slots. The wheel has 18 black slots, 18 red slots, 1 green zero, and 1 green double-zero.
A vertical line is drawn through a normal distribution at z = -0.25, and separates the distribution into two sections. What proportion of the distribution is in the larger section?
The regression line yˆ2 = 3 + 2x has been fitted to the data points (4,8), (2,5), and (1,2). The residual sum of squares will be:
How large a sample size will need to be selected if we wish to have a 99% confidence interval with a margin for error of .10 oz?
A jar contains 2 black marbles and 8 white marbles. If you randomly pick 2 marbles without replacement, what is the probability that you get one marble of each color?
The test statistic for a two-sided significance test for a population mean is z = -2.12. What is the corresponding P -value?
Find the probability that in a given month:
The explanatory variable which is a measure of neighborhood socio-economic status variable RFM. Response variable is percent (%) of bicycle riders that wears a helmet.
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