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Q1) Recent survey illustrates that 680 out of 1050 respondents agree with principle of University top-up fees. Use this data to deduce 95% and 99% confidence intervals for proportion of the general population in favour of such fees. Compute a p-value for the null hypothesis H0: p = 2/3 against the alternative H1 : p ≠ 2/3 . Is it sensible to argue that two-thirds of the general population are in favour of such fees?
Q2) 9 students follow diet over Easter holidays: their weights (in kg) before and after the diet are:
Before
65.4
46.3
56.4
49.2
54.5
55.1
53.5
46.6
58.9
After
61.7
46.1
48
51.8
48.7
52.6
45
58
Stating assumptions on which your arguments and conclusions are based, sum up the statistical evidence regarding effectiveness of this diet.
In a regression analysis involving 30 observations, the following estimated regression equation was obtained.
Here are the DMS odor thresholds for 10 untrained students:
One measure of the overall sampling error in the entire distribution of sample means is the
A business owner decides to use a binomial distribution to solve one of his problems.
Sample data recently collected indicate that Dough Boy's crusts average 30 centimeter in diameter, with a standard deviation of 1.1 centimeters.
Explain the relationship between total gross and opening gross total gross and number of theatres total gross and week in top 60.
Explain finding value of test statistic for the given data also interpret the result. Can Mr. Ratter compute which the mean weight of the bags is less than 50 pounds.
Probability histogran curve of percentage of (P)z
Consider a binomial distribution with 15 identical trials, and a probability of success of 0.5. Use the normal approximation to find the probability that x = 2.
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
These can have a large impact on tenure and promotion decisions at many institutions. One particular instructor had ratings in 3 courses in one semester as given by the table below for the statement "The instructor is an excellent teacher.
A bookcase contains 3 statistics books and 4 biology books. If 2 books are chosen at random, find the chance that both are statistics books.
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