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The p-value evaluates the probability that the hypothesis is true. The larger the p-value, the stronger the evidence against the null hypothesis.
At a significance level of .05, the management wants to carry out a hypothesis test to determine if the quality of the items produced appears to be independent of production process employed. Based
What is the critical value of F at the 0.05 level of significance?
At a significance level of .05, the management wants to perform a hypothesis test to determine whether the quality of items produced appears to be independent of the production process used. Calcul
A research physician wants to determine the average age of people with diabetes. She takes a random sample of 35 diabetics with a mean age of 50.5 years.
Can the biochemist conclude that this new drug is more effective than the existing drug in treatment of this skin disorder?
AA Airlines sells business as well as tourist class seats for its charter flights. To charter plan, at least 15 business class tickets as well as at least 25 tourist class tickets should be sold.
The biochemist finds out that 140 patients in his sample show a complete recovery. Employ alpha=5%. Find out the null hypothesis, alternate hypothesis, critical value, p value and conclusion.
A research physician wants to determine the average age of people with diabetes. She takes a random sample of 35 diabetics with a mean age of 50.5 years. Assume = 21.2.
A real estate agent claims that about 40 cars a day pass a certain house. The traffic is observed for 10 consecutive days with the following results
In the game of roulette, if you bet on the single number $35 for each $1 you wager. There are 18 black, 18 red as well as 2 green slots on the roulette wheel. If your basic bet is $5, determine the
What proportion of observed variation in total service time can be explained by a linear probabilistic relationship between total service time and the number of machines serviced? (Give the answer
Initially you agree, but upon contemplation you think that that model should be amended to account for the quarterly differences. Using EOQ as in the text, find the Q* and total cost of the policy.
A study looking at breast cancer in women compared 100 cases with 100 non-cases. The researchers found that 75 cases did smoke and 25 of the non-cases did smoke. Compute the odds ratio of developing
Conduct hypothesis test using 0.01 level of significance to test if the kind of treatment is associated with the pain level. Of the 80 given the New Treatment 20 had Low Pain level, 20 had Medium, a
A pair of fair dice is cast. Determine the probabiliy which one of the numbers falling uppermost is a 5, given that two numbers falling uppermost are different?
From production line of manufatoring process 400 items are inspected after random selection. It was found that 28 of the items were defective. It is assumed that 10% of the items are defective.
Randomly chose statistics students of mr johnson partcipcated in experiment to test their capabilltiy to estimate when 1min or 60 second has passed. 40 students yielded sample mean of 58.3 sec as we
In a study of length of time that studnets need to earn bachelor degrees, 80 students ar erandomly selected adn they are found to have a mean of 4.8 years an standard deviation of 2.2 years. Develop
Of 493 major league players sruveyed 355 said bonds. Create a 95% confidence interval for percantage of all players who think bonds is the best hitter in baseball history.
In the certain company the mean annual vacation period is 15 days, twelve employees were randomly selected from this company and their vacation days were inquired. The following data wew obtained 5,
Develop a 90% confidence interval of the difference between right arm and left arm systolic blood pressure. Use a 0.05 significance level to test for a difference between the measurements from the two
Suppose that the population has the normal distribution, employ the sample values above to develop a 95% confidence interval estimate of the population mean. Can the result be used to estimate winni
You're given an annual time series with the 40 consecutive values and asked to fit the fifth-order autoregressive model.
The interquartile range includes the middle-most