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Nidhi purchased two sarees for rs.2150 each. She sold one saree at a loss of 8% and the other at a gain. If she had a gain of rs.1230 on the whole transaction, find the selling price of second saree.
Tthere is evidence that the two processes yield different average errors. Assume that the population standard deviations are equal. What is the null hypothesis?
a company is studying the feasibility of buying an elevator for a building under construction. one proposal is a
Of the 500 surveyed, 350 said they would vote for the Democratic incumbent. Using the 0.99 confidence coefficient, what are the confidence limits for the proportion that plan to vote for the Democratic incumbent?
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
Under what conditions, if any, is it not correct to assume that the sampling distribution of the sample mean is approximately normally distributed?
the american lighting company developed a new light bulb that it believes will last at least 700 hours on average. a
a. Set up the null and alternative hypotheses. b. Formulate the Decision Rule. Use 0.01 level of significance. c. What's your decision regarding the null hypothesis? Why? What can we conclude?
allen young has always been proud of his personal investment strategies and has done very well over the past several
Machines used to fill food cartons are usually set to slightly overfill the boxes so that the contents will not weigh less than the advertised net weight. This takes into account the fact that the actual weight of each box varies somewhat from th..
a random sample of 60 undergraduates of a large university found that 32 were in support of an activity fee increase.
if the p-value for the interaction term in a two factor anova table is 0.057 what do you do?a. interaction is
Annually from tornadoes in the U.S.A. is less than 30. If a sample of 9 randomly selected years had a standard deviation of 29, is the claim believable? Use = .01?
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