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Pyramid lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout. Suppose a friend tells you that the average length of trough caught in Pyramid Lake is mu = 19 inches. However, the Creel Survey reported that of a random sample of 51 fish caught, the mean length was x-bar = 18.5 inches, with estimated standard deviation s = 3.2 inches. Do these data indicate that the average length of a trout caught in Pyramid lake is less than mu = 19 inches? Use alpha = 0.05.
a horse race has 12 entries and one person owns 3 of those horses. assuming that there are no ties what is the
a simple random sample of 50 adults is obtained and each persons red blood cell count is measured. the sample mean is
This yields 4 conditions: normal, mean (0 for errors, constant within treatment), constant variance and independent. B)(3) From the output given, are the assumptions in part a) satisfied?
A family has 5 children and 1 of them is a boy the percentage of boy is 1/5, or .020. Do you think one could say the chances of any woman having a boy would be 1/5?
The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status. What is the Population.
In a water treatment plant, the turbidity level, and is suspected is linearly related to inches of accumulated rainfall in the month, x. The following information related to the waste water plant is available:
a 6-faced die is rolled two times. let a be the event that the outcome of the first roll is greater than 4. let b be
1. if x is normally distributed with a mean of 70 and a standard deviation of 7 finda. px less than or equal to 76b.
1. consider the following time series data.week 1 2 3 4 5 6value 18 13 16 11 17 14 using the naive method most recent
A certain pond to check if they are significantly larger than the mean stated above. Is the mean of the sample larger population of this fish? use either L=1% or L=5%.
Use rejection points and previously given sample information to test the hypothesis you set up in part a by setting alpha equal to 010, .05, .01, and .001.
at time 0 a box contains one pen and one pencil. at each time n after a item is chosen at random from the box and put
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