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H-subzero: Pie = .40
H-subone: Pie does not equal .40
A sample of 120 observations revealed that p = .30. At the .05 significance level, can the null hypothesis be rejected?
A- State the decision rule
B- Compute the value of the test statistic
C- What is your decision regarding the null hypothesis?
Finding probability for the given values of the uniform density curve
A processor of carrots cuts the green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test the weight ofthe boxes, a few were checked.
What is the probability that a simple random sample of automobile insurance policies will have a sample mean within $25 of the population mean the for each of the following sample sizes: 30, 50, 100, 400?
The table below lists the number of audience impressions (in hundreds of millions) listening to songs and the corresponding numbers of albums sold (in hundreds of thousands).
Is there a method which is accepted across industries for determining the minimum size of valid sample? N>50 +(8m aka 8 times the number of independent variables)
Test the significant difference between Chi-square for attributes
Consider a gambler who at each play of the game has probability of winning one unit and probability of loosing one unit. Assuming that the successive plays of the game are independent,
A soft drink bottling machine is set to dispense soft drink into containers labeled 16 ounces. While the actual quantities vary they are normally distributed with a mean of 16.1 ounces and a standard deviation of 0.015 ounces.
Find the probability that a standard normal random variable will assume a value between: Find a z such that 70% of the area is above that value.
What purpose does a multiple regression analysis serve? Give an example of how it might be used in marketing research.
The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43. The standard deviation is $0.09. The average price of a sample of 16 low-calorie frozen desserts is $1.03.
As a condition of employment, Fashion Industries applicants must pass a drug test. Of the last 220 applicants 14 failed the test. Develop a 99 percent confidence interval for the proportion of applicants that fail the test.
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