State the null and alternative hypotheses for each conjecture. a. A researcher thinks that if expectant mother...

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Statistics

State the null and alternative hypotheses for eachconjecture.
a. A researcher thinks that if expectant mother use vitaminpills, the birth weight of the babies will increase. The averagebirth weight of the population is 8.6 pounds.
b. An engineer hypothesizes that the mean number of defects canbe decreased in a manufacturing process of compact disks ny usingrobots instead of humans for certain tasks. The mean number ofdefective disks per 1000 is 8.
c. A psychologist feels that playing soft music during a testwill change the results of the test. The psychologist is not surewhether the grades will be higher or lower. In the past, the meanof the scores was 73.

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3.6 Ratings (321 Votes)

a In the study the researcher wants to check whether thebirth weight of the babies willincrease if the expectant mother use vitamin pillsIt is given that the average birthweight of the population is 86 See Answer

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