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The average grade point average (GPA) of undergraduate students in New York is normally distributed with a population mean of 2.5 and a population standard deviation of .5. Compute the following, showing all work:
(II) The percentage of students with GPA's above 3.0 is:
(III) Above what GPA will the top 5% of the students be (i.e., compute the 95th percentile):
(IV) If a sample of 25 students is taken, what is the probability that the sample mean GPA will be between 2.50 and 2.75?
(a) less than .10(b) .122(c) .243(d) .307(e) .346(f) .38(g) .42(h) .44(i) .494(j) more than .494.
The probability that a patient recovers from a disease is 63%. What is the probability that:
The consumer advocate claim that 80% of cable televion subcribers are not satisfied with their cable service. In the attempt to justify this claim, a arbitarily chosen sample of cable subcribers will be polled in this issue.
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance.
In 1990, the population of Austin, Texas, was 494,290. During the next 10 years, the population increased by about 3% each year.
Describe three key lessons learned relative to ANOVA and Nonparametric tests. what concepts and analytic tools will you be able to use in your workplace?
If the names of these 100 people in the building are still unknown but a room is allowed to lodge one tenant at most , then are there how many ways of room occupation?
Write the expression below as simply as possible in its radical form. Assume that all of the variables in the expression represent positive real numbers.
A drug company is considering marketing a new local anesthetic. The effective time of the anesthetic the company is currently producing has a normal distribution with an average of 7.5 minutes and a standard deviation of 1.2 minutes.
If a member of this senior class is selected at random, find the probability that the student a) smokes but does not drink alcoholic beverages; b) eats between meals and drinks alcoholic beverages but does not smoke; c) neither smokes nor eats bet..
The following table gives the coal usage and electricity generated by ten randomly selected power stations in South Africa in 1992:
The sample size n , the sample means, and the sample standard deviations for the two groups are given below.
To determine whether there is a difference in the proportion of viewers watching the three channels.
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