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A basketball player has a 79% chance of making a free throw. What is the probability of her making 97 or more free throws in 118 trials? Round your standard normal variable to two decimal places before using the table of values?
The correlation between hours spent in the course and exam grades is .8. what percent f variation in exam grades can be explained by hours spent in the course?
Be sure the appropriate assumptions and conditions are satisfied before you proceed.
The moment generating function of normal distributed random variable ,Y, with mean and variance .derive the moment generating function of X=-3Y+4.what is the distribution of X? why?
What would be a good example of a null and alternative hypotheses for a decision relevant in life? What Type I and Type II errors could occur with your decision-making process?
A marketing poll revealed that 45% of Americans say they that they have dinner regularly as a family. You randomly choose 10 American families and ask if they regularly have dinner together as a family.
Differentiate between descriptive statistics and inferential statistics. Provide an example for each. How does correlation analysis differ from regression analysis? What does a correlation coefficient reveal? Is correlation the same as causation?
Consider some decision-making situations in Business Management field of study, and describe two or more in which tests of one or more population variances are important.
Discuss the subject matter in the article, and interpret the results and what the confidence interval and margin of error mean as they apply to the specific subject matter.
How many treatments are there? What is the total sample size? Is there a significant difference at the 5% Level of significance? Would I accept or reject the null Hypothesis.
Fifty samples of size 600 were drawn from a manufacturing process and the number of defectives in each sample was counted.
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
An owner of a fast food restaurant reported to corporate headquarters that the average bill paid by his customers in the last quarter was $6.20 and that the standard deviation was $1.90.
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