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A multiple-choice examination consists of 75 questions, each having possible choices a, b, c, and d. Approximate the probability that a student will get more than 15 answers correct if he randomly guesses at each answer. (Note that, if he randomly guesses at each answer, then the probability that he gets any one answer correct is 0.25.) Use the normal approximation to the binomial with a correction for continuity. Please round your answer to at least three decimal places. Do not round any intermediate steps.
Faced with rising fax costs, a firm issued a guideline those transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below.
1. Calculate and interpret relevant summary measures for California home prices in these two regions.
What is the range of temperatures and What is the range of temperatures and what are the effects of the potential failure?
A cost accountant is developing a regression model to predict the total cost of producing a batch of printed circuit boards. What is the independent variable?
What was the intention to make "Spirited Away"? Discuss the significance of the movie?
The test scores of a student who took both tests are given below. A student gets a 75 on the statistics test and a 29 on the biology test. transform each test score to a z-score.
A week later the analysis had been completed. Of a total of 144 accounts (including the nine reported in part b), the average was x- = $11,254. Find the posterior distribution for μ for each of the two prior distributions. Calculate P(Μ > $11,000) f..
What percent of batteries have a life span that is more than 2560 hours? Would it be unusual for a battery to have a life span that is more than 2560 hours? Explain your reasoning
This is an Excel sheet that calculates both probabilities and percentiles for any normal or standard normal probability distribution. Replaces normal probability tables.
chi-square test for independent of attributes.a random sample of students is interviewed to determine if there is an
given ten students four of which are females if two students are selected at random without replacement what is the
q1. calculate each of the following values for the data set below assume it is a population.3.42 4.10 4.15 4.19 4.26
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