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"Why is the Normal Distribution so important to statistics?"
Hint 1: Do many real world situations tend to be normally distributed?
Hint 2: is the normal distribution used frequently in statistics texts?
Hint 3: Is the normal distribution (or its special case, the standard normal distribution) effective in characterizing situations and/or in helping managers make decisions?
Find the critical value for different types of sample size and level of significance:
For each of following data sets, select the most suitable response from choices below the table. A strong negative linear relation exists.
In an experiment in which a die was rolled 188 times it was counted up how many times each face came up. The results are as follows:
In the following questions, you should demonstrate your understanding of sampling distribution:
In ANOVA, which of the following is not affected by whether or not the population means are equal?
If 64 students were randomly sampled, the probability that the sample mean of the sampled students exceeds 73.5 minutes is approximately 0.
Find a 95% confidence interval for the mean daily caloric intake. Interpret this interval.
Assume a random sample of 50 architects and engineers is selected. How likely is it that the random sample contain five or fewer women in these positions.
A study 200 nurses found that of 125 females nurses, 56 had bachelor's degree; and of 75 male nurses; 34 had bachelor degrees. if a nurse is selected at random, find the probability that the nurse is a female nurse with a bachelor degree.
At 0.01 significance level is it sensible to conclude that modification reduced number of traffic accidents?
At the 0.01 level of significance, is there evidence to support the professor's claim?
What IQ score should one have in order to be eligible for Mensa?
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