State the null and alternative hypotheses for the above scenario.
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A hospital director believes that under 68% of the test tubes contain errors. A sample of 100 reports found 61 errors. Is there sufficient evidence at the 0.05 level to substantiate the hospital director's claim?
State the null and alternative hypotheses for the above scenario.
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- What is meant by the sample space of an experiment?A newsletter publisher believes that over 54% of their readers own a personal computer. Is there sufficient evidence at the 0.05 level to substantiate the publisher's claim? State the null and alternative hypotheses for the above scenario.A hospital director believes that above 55% of the lab reports contain errors and feels an audit is required. A sample of 120 reports found 72 errors. Is there sufficient evidence at the 0.02 level to substantiate the hospital director's claim? State the null and alternative hypotheses for the above scenario.
- A newsletter publisher believes that less than 65% of their readers own a Rolls Royce. Is there sufficient evidence at the 0.05 level to substantiate the publisher's claim? State the null and alternative hypotheses for the above scenario.What does The statistical hypotheses consist of?A newsletter publisher believes that over 33% of their readers own a laptop. For marketing purposes, a potential advertiser wants to confirm this claim. After performing a test at the 0.02 level of significance, the advertiser decides to reject the null hypothesis. What is the conclusion regarding the publisher's claim?
- What would the null and alternative hypotheses be, as well as the test statistic?The mean repair bill of cars is greater than $110. A) Write the null and alternative hypotheses. B) Indicate whether the hypothesis is left,right, or two- tailed.The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, what is the correct set of hypotheses.
- State the null and alternative hypotheses and the level of significance for the questionA researcher hypothesizes that Drug A is more effective than Drug B. In conducting an analysis to test this hypothesis, how should the null hypothesis be stated?It has been determined that 37 out of 100 adult Americans that did not attend college believe in extra-terrestrials. However, from a random sample of 100 adult Americans that did not attend college 43 claim that they believe in extra-terrestrials. Does this indicate that the proportion of people who did not attend college and who believe in extra-terrestrials has changed? Conduct a hypothesis test with a = 0.01 and interpret the results.