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A first year medical school class (n = 200) took a first midterm examination in human physiology. The results were as follows (_X = 65, S = 7). Explain how you would standardize any particular score from this distribution, and then solve the following problems:
a. What Z score corresponds to a test score of 40?
b. What Z score corresponds to a test score of 50?
c. What Z score corresponds to a test score of 60?
d. What Z score corresponds to a test score of 70?
e. How many students received a score of 75 or higher?
in a certain noisy factory workers are provided with earplugs and are expected to wear them. an industrial hygienist
the cost per item at a supermarket follows an exponential distribution. there are many inexpensive items and a few
A random sample of n measurements was selected from a population with unknown mean μ and standard deviation σ. Calculate a 99% confidence interval for μ for each of the following situations: n=85, x¯=23.8, s=3.75
a sample of nine public universities and nine private universities was taken. the total cost for the year including
A simple random sample of 35 observations is derived from a normally distributed population with a known standard deviation of 6.3. Compute the margin of error with 95% confidence
a survery of magizine subcribers showed that 45.8 percent rented a car during the past 12 months for business reasons.
The random number generator on calculators randomly generates a number between 0 and 1. The random variable X, the number generated, follows a Uniform Probability Distribution. What is the probability of generating a number between 0 and 0.2?
a bagel shop wants to estimate their daily demand for their popular poppy seed bagel. the shop owner determined that
Births with gestation time of 258 days or less are regarded to be premature births. Determine the probability that randomly selected pregnant woman will give birth to premature baby?
the time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be
your restaurant serves an average of 23 customers per half hour. what is the probability that during the next half hour
the national center for health statistics reports that the mean systolic blood pressure for males 3 to 44 years of age
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