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Test whether the gender distribution for theater goers from the general college by proportion test.
The student population at the stated college consists of 55% females and 45% males.
The college theater department recently staged a production of modern music. A researcher recorded the gender of each student entering the theater and found a total of 385 females and 215 males. Is the gender distribution for theater goers significantly different from the distribution for the general college? Test at the .05 level of significance.
At.01 significance level, can we conclude that 30-year mortgage rate for small banks is less than 6%? Evaluate the p-value.
Compute the appropriate Test Statistic to test null hypothesis that mean of population is 4.3 against alternative hypothesis μ ≠ 4.3.
Is your sample of MSU students significantly different from the population of MSU students in terms of the number of classes they take per semester (use alpha level .05)? To answer this question, follow all of your steps for hypothesis testing.
Do the association between the sizes of the heads and bodies of the two species appear to be strong? Explain.
Consider binomial distribution with 14 identical trials, and probability of success of 0.4.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
Explain why the t distribution is used as a part of the confidence interval.
If a card is drawn at random from a standard 52-card deck, what is the probability that the card drawn is one of the following?
Assume the likelihood that any flight on Northwest Airlines arrives within 15 minutes of the scheduled time is 0.90. We choose four flights from yesterday for study.
As sample size increases, the standard error of M _______________ .
Write down the probability of that the median of the sample or average medians is greater or more than 320 minutes?
Concept of statistical signi cance
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