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The article measured capability of gauge by measuring weights of 2 sheets of paper. Data is in the table.
a) Check suppositions that data from each sheet are from normal dist.
b) Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
c) Repeat previous test with α=0.10
d) Compare your answers from parts b and c an describe why are they the same or why are they different.
e) Describe how questions in parts b and c could be replied with confidence intervals.
The alternative hypothesis is true. In this case the consumer advocacy group will have, A consumer advocacy group doubts this claim and tests the hypotheses
Which of the following is the appropriate conclusion from carrying out these multiple comparisons
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
A sample of 50 male and 50 female infants were put on an experimental infant formula. After two weeks the parents of each infant were asked to fill out a questionnaire concerning infant satisfaction on the formula. One of the questions was "Did Ba..
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out-of-pocket? Write your hypotheses and decision rule.
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
Compute the probability that student eats at fast food restaurant 2 or more times per week?
A game involving a pair of dice pays you 3 with probability 17/36, costs you 2 with probability 14/36, and costs you 4 with probability 5/36. What is your probability of losing money in one play of the game?
Find out the probability distribution, and the cumulative probability distribution of car arrivals.
The random variable X has which of the following probability distributions and What is the probability that no student wins
An experiment was carried out to assess the effects of four tomato varieties and four planting densities on yield. There were 64 plots, and each of the 16 factor combinations was randomly assigned to 4 plots
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