A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose a random sample of 1077 people with mean amount of time spent eating and drinking per day is 1.09 hours with standard deviation of 0.52 hours, 95 percent confident rate

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Given that Mean = 6.9 and Standard deviation = 1.5 Formula z = (x - mean)/ SD

Q: a 2003 study, the Accreditation Council for Graduate Medical Education found that medical residents’…

A: The formula of standardized z score for normal distribution is given by

Q: percent of men meeting these height requirements.

A: Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a…

Q: There is an average of 4 accidents in a week on a major highway in the city. What is the standard…

A:

Q: Does the sample size have an effect on the standard deviation of all possible sample means? Explain…

A: Points on sampling distribution of the sample mean: If the true population distribution of a random…

Q: During one season of racing at the Talladega Superspeedway, the mean speed of the cars racing there…

A:

Q: In a study of 400 people, the mean age is 50 years and the standard deviation of age is 10 years.…

A: