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Annual per capita consumption of milk is 21.6 gallons (Statistical abstract of the United States: 2006) Being from the midwest, you believe milk consumption is higher there and wish to support your opinion. A sample of 16 Individuals from the midwestern town of Webster City showed a sample of 16 individuals from the midwestern town of Webster City showed a sample mean annual consumption of 24.1 gallons with a standard deviation of s=4.8.
a. Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national mean.
b. What is the point estimte of the difference between mean annual consumption in Webster City and the national mean?
c. At \(\alpha=.05\), test for a significant dfference. What is your conclusion?
Find a research article and clearly define both the null and directional hypothesis that was or could have been tested during the statistical analysis of the data.
The following problem develop the concept of determining the probability distribution of random variable and its mean and variance.
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Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 79.
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
According to the Sleep Foundation, the average night's sleep is 6.8 hours. Assume the standard deviation is 0.6 hours and the probability distribution is normal. a. What is the probability that a randomly selected person sleeps more than 8 hours?
Assume that your students are a sample of all fourth graders in your state and you can use your student data to test some ideas. What is the major problem with your assumption.
The buyer-believes that the differences are normally distributed and will use this sample to perform an appropriate test at a level of significance of 0.01.
What is an estimate of the proportion defective for the piston manufacturing process when it is control?
An independent researcher has decided to study variations in TV viewing habits among three American cities. She has managed to randomly sample households in Chicago, Atlanta, and Minneapolis and gather data on the daily "on" times for households o..
Do you believe that the government should or should not be allowed to prohibit teachers from expressing their religious beliefs in public schools classrooms?
Using a normal distribution with a mean of 1118 and a standard deviation of 52 for the weights of steers, what percent of steers weigh over 1250 pounds, under 1100 pounds, between 1000 and 1150 pounds.
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