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Q1) Survey of students at certain college illustrated that 60% of them read daily newspaper and 40% read weekly news magazine. Also, if student reads daily newspaper, then chance of reading the weekly news magazine rose to 50%.
i) Determine percentage of students read both?
ii) Find out percentage of students read at least one?
iii) Determine percentage of students read neither?
iv) Determine percentage of news paper readers of a news magazine also read news paper?
Q2) Two letters are chosen at random without replacement from word statistical.
a) Determine the probability that both letters are s?
b) Determine the probability that both letters are the same?
c) If you know both letters are same, determine the probability that both are s?
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
Determine the probability the transmission will break down between 100,000 and 200,000 miles?
By using 0.05 level of significance, is there any evidence of difference in mean life of bulbs produced by two kinds of machines?Calculate p-value and interpret its meaning.
Suppose that a researcher does a study to see how level of anxiety (A 1 = low, A 2 = medium, A 3 = high) is used to predict exam performance (Y).
At.01 significance level, can we conclude that 30-year mortgage rate for small banks is less than 6%? Evaluate the p-value.
In ANOVA, which of the following is not affected by whether or not the population means are equal?
Which combination of factors has greatest likelihood of rejecting null hypothesis?
Determine the distribution of X? Determine its parameters?
The ________ is the probability of observing a sample value as extreme as, or more extreme than the value observed, given that the null hypothesis is true.
Carry out the global test of hypothesis to find out whether any of the regression coefficients are not equal to 0. Use.05 level of significance.
According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly.
Two types of flares are tested for their burning times (in minutes) and sample results are given below.
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