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Heights of college-aged women are approximately bell-shaped and symmetric, with almost all of them (95%) falling between 58" and 72". Find the approximate values of the mean and standard deviation.
Explain the concepts involved in hypothesis testing, including what hypothesis testing is, and an explanation of the four types of scales used to measure data.
Standard deviation of the population is 9 hours. Give the null and alternative hypotheses. Compute the test and p-value. Use a=0.01 to make your conclusion based on the p-value.
State a type I error and describe why it happens. Describe the factor that researcher can control to change type I error. Also, describe how type I errors can be avoided.
Given that development is successful, for what endpoint values for a large market does developing the battery have a lower EMV than not developing the battery?
Detremine the mean, standard deviation, and variance for this frequency distribution.
If he succeeds he will obtain 2000 US dollars. suppose that thief currently has 1500 US dollars in his pocket. Compute expected value of this undertaking.
A tailor makes wool tweed sport coats and wool slacks. He is able to get a shipment of 150 square yard of wool cloth from Scotland each month to make coats and slacks
Identify 5 variables of interest to healthcare managers. Select and define one variable and include your rationale for selecting this variable. What is the difference between a dependent and independent variable?
If the population standard deviation is σ = 10, can you conclude that the treatment has a significant effect? Use a two-tailed with α = .05.
Explain how you can determine n3 from knowing n1 and n2. Thus, the multinomial distribution of (n1, n2, n3) is actually two-dimensional.
In order that the sample proportion and the population proportion not differ by more than 0.05 with 95% level of confidence, what sample size should be used?
A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.
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