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Suppose that prices of a certain model of new homes are normally distruted with a mean of $142000 and a standard deviation of $1100 find the persentage of buyers who paid more than $152400.
Suppose that the usual one way air fare to a certain city is $285 and the cost of flying first class is $573. should a passenter who wishes to fly to this city opt to fly as a standby?
An airline reports that it has been experiencing a 17% rate of noshow on advanced reservations. among 150 advanced reservations, find the probability that there will be fewer than 20 no shows.
Suppose that a frequency distribution was developed from this, and there were 5 classes (10- under 20, 20-under 30, etc.). What is the cumulative frequency for the 30-under 40 class interval?
Obtain the point estimate of the mean difference of the bleaching agent content in a packet of 1kg wheat flour.
Formulate the appropriate null and alternative hypotheses, and determine the type of test.
Determine the sampling distribution for the mean difference of the bleaching agent in a 1kg packet of wheat flour.
Your evaluation of the discussion of the research, as reported by Bryant. Why people may think that there is a relationship between golf and firm performance. If you are going to study such relation
During each four-hour period, the Smalltown police force requires the following number of on-duty police officers: eight from midnight to 4 A.M.; seven from 4 A.M. to 8 A.M.; six from 8 A.M. to noon
Use the given frequency distribution to create the following graphs, by hand. Create a relative frequency polygon for the data.
The sample data appears to have a bell-shaped distribution. Find the 90% confidence interval for the mean time of all deliveries.
Given that the mean of all 102 atomic numbers is 51.794, and the population standard deviation is 29.804, what is the probability that the mean of the 40 atomic numbers selected by the student will
If 100 female students are randomly selected, find the probability that they have a mean height greater than 63.0 in.
Scores are obtained from the Law School Admission Test (LSAT) are normally distributed with a mean score of 550 and a standard deviation of 110.
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
Consider the data to be 1, 2, 4, 0, 5, 7, 8 and 6. Calculate the MLE estimator for exponential distribution.
A survey is being planned to estimate the prevalence of secondary infertility amongst couples aged 20-45. The investigators expect the prevalence to be 10%, and would like to estimate it to within
Use the PS power calculator to find out how many supermarkets and local corner shops are required (assume equal group), if we are going to conduct a similar study to investigate the difference in co
Identify the primary outcome measure and calculate using PS-sample size program to determine the power of the primary outcome measure, stating clearly the measures that were used to arrive at the r
Identify the primary outcome measure and calculate using PS-sample size program to determine the power of the primary outcome measure, stating clearly the measures that were used to arrive at the re
At alpha = 0.05, test the Mall's manager claim. Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.
Use the correct formula to find the probability that, out of 25 customers, exactly 10 of them make a purchase. Show your calculations or explain how you found the probability.
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 65,000 miles and a standard deviation of 6,500 miles. What is the probability of having a
The mean hours of Internet usage by adults in the US in claimed to be 25 hours per week. A hypothesis test is performed at a level of significance of 0.05 with a P-value of 0.08. Choose the best i
Based on this linear regression equation, estimate the expected grade for a student spending 8 hours studying. Round your answer to two decimal places.