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Identify the null hypothesis, alternative hypothesis, test statistic, P-vahie, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-vahie method.
Assume that the significance level is a=0.05. use the given information to find the p-value and the critical value(s).
In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. T
Use a 0.05 signicance leve to test the claim that this sample is from a population with a mean weight equal to 2.5 g. Do the coins appear to confirm to specifications of the coin mint? Identify the
Approximately 10% of the glass coming off a production line have serious flaws in the glass. If two bottles are randomly selected, find the mean and the variance of the number of bottles that have s
The grading policy says the cut-offs for the other grades correspond to the following: bottom 5% receive F, next 10% receive D, next 40% receive C, and next 30% receive B. These cut-offs are based
A statistics instructor wishes to find out the relationship between the classification of a student and the student's grade in the course. the following is a breakdown of three sections of an introd
The local DQ kept track of the number of paying cuustomers during the noon hour for 100 days. The resulting statistics from their handy-dandy stats-pack-cruncher were as follows: Mean=95, Median=97,
Compute the value of b0 and b1. Find the regression equation. Predict the income rate for an area with an average expense of $75. Computed the coefficient of correlation
A survey found that women's heights are normally distributed with mean 63.9 in and standard deviation 2.2 in. A branch of the military requires women's heights to be between 58 in and 80 in. Find t
If the first quartile, Q1, is computed from the list of all ZIP codes, does the result correspond to the location that is 25% of the distance from the location that is farthest east to the location
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 191 lb. The new population of pilots has normally distributed weights
Alex Hamilton founded Hamilton Marketing Services in 1999 after leaving a major marketing consulting firm in Chicago. Hamilton Marketing Services focuses on small- to medium-sized retail firms and h
The following data the number of car thefts that occurred in a city during the past 12 days.
F(x) = k(1-1/x^2), 1 ? x < 2 is the distribution function for a continuous random variable X. Solve for the value of k and find the probability density function for X
He checked the weather for game day and found that there is 60% chance of rain. Looking back at historical data on Purdue home football games and weather conditions, when it rains, Purdue wins 44%
There are four cards in a pocket, and each of them is marked with 3 numbers. These numbers are 110, 101, 011, and 000. You draw a card randomly and let Ai (i = 1, 2, 3) represent the event that your
What is the probability that you are dealt a three of a kind or 4 of a kind? Note: three of a kind means that the other 2 cards are NOT a pair. What is the probability that you are dealt a full hous
A trader is designing his investment portfolio. He has prepared a list of potential companies in which to purchase stock. These include 5 companies in agriculture, 6 companies in manufacturing and 9
Construct the power curve for this test and discuss the distribution of the population. Using the graph what is the probability of a Type II error if th true average IQ is 144? What must I do in orde
What is the probability of a Type II error if the true proportion of retail firms with foreign majority stockholders is forty percent? If we require that Type II error at 40% and Type I error be the
The two largest cable providers are Concast cable Connections, with 21.5 million subscribers, and Time Warner Cable with 11.0 million subscribers. Suppose the management of Time Warner Cable subject
Find the amounts indicated. The monthly deposits necessary to accumulate $12,000 after 5 years in an account earning 4.75% compounded monthly.
Find the present value of the investment. Funding $100 withdrawls at the end of each month for 5 years, at 4.75% intrest compounded monthly
Suppose that the proportion of fatal single-car accidents that involve alcohol consumption on the part of the driver is 60%. If the records of fatal single-car accidents in a geographical area are