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Industry standards suggest that 10 percent of new vehicles require warranty service within the first year. Jones Nissan in Sumter, South Carolina, sold 12 Nissans yesterday.
a. What is the probability that none of these vehicles requires warranty service?b. What is the probability exactly one of these vehicles requires warranty service?c. Determine the probability that exactly two of these vehicles require warranty service.d. Compute the mean and standard deviation of this probability distribution.
In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significant level in .05. The critical value of X2 is.
According to a recently conducted survey, 90% of all drivers in Trinidad and Tobago claim to consistently driver over the legal speed limit.
Suppose the number of tickets written per day follows a Poisson dictribution with mean of 6.5 tickets per day. Interpret the value of the mean.
What is the relative frequency of classical CDs with a playing time of X less than 49 minutes? That is, find the relative frequency of the event X
What are some real life examples of the use of Chi-Square tests using contingency tables? Why is a test, which is testing significant differences among means called Analysis of Variance?
The manager for Select-a-Seat, a company that sells tickets to athletic games, concerts, and other events, has determined that the number of people arriving at the Broadway location on a typical day is Poisson distributed with a mean of 12 per hou..
Make an Excel line graph of the data on computer viruses. Discuss the underlying causes that might explain the trend or pattern.
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
Blood tests showed a sample mean of 8.1 pH with sample standard deviation s = 0.6 pH. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH of the blood.
Explain the difference between a left tail, two-tailed, and right tailed text. When would we choose a two tailed test? How can we tell the direction by looking at a pair of hypothesis?
Findout the consumption level separating the bottom 45% to the top 55%. The September energy consumption levels for single family homes are found to the normally distributed with a mean
From the following information for Alfred Industries compute the overhead spending variance and the volume variance:
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