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Identifying H0and Hr in ex 5-12 , examine the given statement , then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
1. The mean IQ of statistics students is at least 110.
2. The percentage of men who watch golf on tv is not 70%, as is claimed by the Madison Advertising Company.
Finding Critical Values. In Exercises 13-20 , find the critical z values. In each case ,assume that the normal distribution applies.
3. Two-tailed test: alpha = 0.01
4. Left-tailed test; alpha=0.05
By using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 4.3?
Choose a number at random from the set of numbers from the set of numbers {1,2,3,4,5}. Now choose a number from the subset {1,...,X). Call this second number Y.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
What control chart(s) would you use for this data and what are the final control limits?
Drug manufacturer knows that for a certain antibiotics, the average number of doses ordered for a patient is 20. Steve Simmons, a salesman for the company
Determine the value of test statistic z using z = ^p-P ^pq/n. Claim is that proportion of drowning deaths of children attributable to beaches is more than 0.25, and sample statistics.
Find the area under the normal distribution curve to the right of z = -1.03.
NCAA Basketball Tournament. Each year, 64 college basketball teams compete in the NCAA tournament. Sandbox.com recently offered a prize of $10 million to anyone who could correctly pick the winner in each of the tournament games.
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
What is the best predicted IQ of the wife, given that the husband has an IQ of 105 ? Use a significance level of 0.05.
Anthony is measuring his participants' emotional states in two different ways (self-report and galvanic skin response) in order to gain a greater confidence that he is actually measuring the emotional that he thinks he is.
He reviews the last eight months at dealership B and finds the standard deviation of the eight monthly sales to be 22.95. Using the .01 significance level does the analyst find evidence that the boast of dealership A is correct?
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