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A drug manufacturer claims that a certain drug cures a blooddiseaseon the average 80% of the time. To check the claim, government testers used the drug on a sample of 100 individuals& decidedto accept the claim if 75 or more are cured.
(a) What is the probability that the claim will be rejected when the cure probability is, in fact 0.8?
(b) What is the probability that the claim will be accepted by the government when the cure probability is as low as 0.7?
In this continuous production process, the amount of toothpaste put in a tube is normally distributed with a mean of 8.17 ounces and a standard deviation of 0.12 ounces. If the actual capacity of the tubes used is 8.49 ounces, what proportion of t..
A retailer entered into an exclusive agreement with a supplier who guaranteed to provide all products at competitive prices. The retailer eventually began to purchase supplies from other vendors who offered better prices. The original supplier ?le..
A researcher used stepwise regression to create regression models to predict Birth-Rate (births per1000) using five predictors:
A sample of 25 production employees has been tested twice on a standard test of manual dexterity. The average change in the time required to finish the test was a decrease of 1.5 minutes, with a standard deviation of 0.3 minutes. At the 0.05 level..
imagine that the following sentence is from a results section. identify what is wrong with it. there was a significant
Calculate the test statistic and the df - Write a conclusion, addressing the research question. Your conclusion should include an interpretation of the 95% confidence bound which is given in the above output
Is there evidence that the population mean is above $300, if X (bar) = $305.11 and s = $43.20?
1. suppose 2 of cotton fabric rolls and 4 of nylon rolls contain flaws. of the rolls used by a manufacturer 70 are
If we assume that the monthly rents for apartments on the east side are normally distributed, is there enough evidence to conclude, at the .05 level of significance, that is less than $675?
1. Develop the appropriate research questions and/or hypothesis for the main effects and interaction.
information from a universitys website states that 55.6 of its students are female. for a research project a graduate
the following is an appropriate statement of the null and alternate hypotheses for a test of a population meanh0 ?
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