A random sample of n1 = 154 people ages 16 to 19 were taken from the island of Oahu, Hawaii, and 11 were found to be high school dropouts. Another random sample of n2 = 136 people ages 16 to 19 were taken from Sweetwater County, Wyoming, and 5 were found to be high school dropouts. Do these data indicate that the population proportion of high school dropouts on Oahu is different (either way) from that of Sweetwater County? Use a 1% level of significance. 1. What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.) 2. Find (or estimate) the P-value. (Round your answer to four decimal places.)

The accompanying table summarizes data from a survey of 3,594 parents with school-aged children. In this survey, parents were asked if they were completely satisfied with the education their oldest child receives. School Type Percentage of ParentsCompletely Satisfied Public 28% Private 62% Of the 3,594 parents surveyed, 608 were parents whose oldest child attended a private school. The parents participating in this survey were thought to be representative of U.S. parents of school-aged children. (a) Use the given information to determine the number of parents surveyed falling into each of the cells in the table below. (Round your answers to the nearest integer.)   CompletelySatisfied Not CompletelySatisfied Total Public School       Private School     608 Total     3,594 (b) Estimate the probability that a randomly selected parent of school-aged children is completely satisfied with his or her oldest child's education. (Round your answer to four decimal…

A small study (n=10) is designed to assess if there is an association between smoking in pregnancy and low birth weight. Low birth weight babies are those born less than 5.5 pounds.  The following data represent the birth weights, in pounds, of babies born to mothers who reported smoking in pregnancy and those who did not.   Mother smoked in pregnancy                   5.0            4.2       4.8       3.3            3.9 Mother did not smoke during pregnancy        5.1            4.9       5.3       5.4            4.6   Is there a significant difference in birth weights between mother who smoked during pregnancy and those who did not?  Apply the Mann Whitney U Test at a 5% level of significance.   Complete the table below.         Total Sample (Ordered Smallest to Largest) Ranks Mother Smoked in Pregnancy Mother Did Not Smoke in Pregnancy Rank Smoked Did Not Smoke Smoked Did Not Smoke 5.0 5.1 1 3.3       4.2 4.9 2…

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