A random sample of 51 newborn babies was taken at the Hospital. The sample mean was...
A random sample of 51 newborn babies was taken at the Hospital. The sample mean was 6.87 pounds and the standard deviation was 1.76 pounds. In previous studies, the mean newborn weight was found to be 7.5 pounds.
a. Does the sample from the Hospitalindicate that the mean newborn weight is less than what was found in previous studies? Use a hypothesis test with the 7-step method and the critical value method to verify if there is enough significant evidence (? = 0.05) to negate the results of the previous research.
b. Calculate the p-value of the test statistic.
c. Use Rstudio to justify the results of the hypothesis test (and include the R output).
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A random sample of 51 newborn babies was taken at the Hospital.
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born babies are boys Dothe results sup port the belefth at 51 2% of newborn babies are bo Arandom sample of 820 bǐths h ludd426 boys Use a 0 10 signifiance level to test the dain' that 51 2% of n Identily the null and aternative hypotheses for this test Choose the corect answer below A. Ho p-0.512 HI p#0512 О в. нор-0512 Hy p>0512 О С. Не р#0 512 HI p-0.512 H pc0512 dentify the lest statistic for this...
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2. Assuming that the weights of newborn babies at a certain hospital are normally distributed with mean 6.7 pounds and standard deviation 1.2. Use this information to label the graph and answer the following questions. 68% of the babies will weigh between pounds. 95% of the babies will weigh between pounds. Almost all babies will weigh between pounds. How many babies in a group of 80 from this hospital are expected to weigh more than 7.9 pounds?
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