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If the calculated z = 1.35. What is the p-value in a two tailed test?
When testing a hypothesis about two population means, the z-test may be used if both sample sizes are?
Find the mean and standard deviation of the resulting distribution of sample means for nequals =144
a. Specify the alternative hypothesis. b. Calculate the value of the test statistic.
iq sores in a population are normally distributed with a mean of 100 and a standard deviation of 15. if a sample of
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
According to Mars, Incorporated, 20% of its plain M&M'S candies are orange. Assume that the company's claim is true. Suppose that you reach into a large bag.
What is the probability that the power supply would fail at 2,100 hours or less? Based on this probability, do you feel the PC maker has a right.
The following data represents the running time of films produced by 2 motion picture companies. Assume these are independent samples
Identify the variable of interest and the unit of measurement and what proportion of reaction times are less than 2.00 seconds?
A survey researcher compares 4 religious groups on their attitudes toward education. 1200 subjects receive the survey and 823 respond. There are 10 items; the likert scale is 1-5. A high positive score indicates a more positive attitude.
List the elements that make up the following events: (1) A = at least two heads, (2) B = the first two tosses are heads, (3) C = the last toss is a tail.
a car manufacturer claims that the miles per gallon for a certain model has a mean equal to 40.5 miles with a standard
you are rolling a 6-sided die but you dont know whether its fair or not. you know that that are only two kinds of dice
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