Hello, can you help me, please?

Math 1'27 Final Exam 19. Circle TRLJ E or FAQE for each of the following: (72 pt each, 10 pts total) T F a) If we wish to include the value "78\" in a stem-and-leaf plot of two digit numbers, the stem would be "7\" and the leaf would be ".\"8 T F b) A hypothesis test is conducted with a significance level of a = 0.05. A pvalue is computed for the sample data and pvalue = 0.0835. We should decide to reject H... T F c) Categorical data can be summarized in a boxplot. T F d) If data is normally distributed, exactly 68% of the data lies between 01 and 03. T F e) The median of a distribution can be visualized as the "balance point\" for the shape. T F f) The pvalue is the chance of getting our sample data, or something more extreme, under the assumption that the null hypothesis is true. T F 9) Suppose that after calculating a statistic from a sample it is later shown that the statistic did not equal the parameter. This proves that the sampling technique used must have been biased. T F h) In a hypothesis test, we determine the null hypothesis is \"Ho: 11 g 22.1 The direction of this test would be one-sided to the right. T F i) If we are discussing the 'shape of the distribution' we must be examining a categorical variable. T F j) A distribution is N(40, 4.7). To find the area below a score of 47 using our calculator we would type in normalodi(47,1E99,40,4.7). T F k) When conducting a hypothesis test, the original claim is always Hn. T F I) If we are given N(0,1) and P(X > a) = 0.5398, we would use the feature invNorm(0.5398,0,1) to find the value of a. T F m) A confounding variable is a variable which is not measured during a study, but which may explain the relationship between the measured variables. T F n) In a "double blind" experiment neither the subject nor the experimenter knows whether the person is receiving the treatment or the placebo. T F o) If we keep the sample size the same, increasing the confidence level will increase the size of the confidence interval. T F p) When we decrease the size of the class width in a histogram we increase the number of bars in the histogram. T F q) The field of inferential statistics allows us to move from known information about the population to making intelligent statements about unknown sample statistics. T F r) A sample set of data finds that 7:: 147 and s = 14. This means that approximately 99.7% of the data is between 133 and 161. T F 5) When we build a confidence interval, the population parameter will always be in the middle of this interval. T F t) Statistics is a science in which correct calculations will always lead to indisputable and Spring 2021' correct conclusions. page 10 of14 Math 127 Final Exam 22. In each of the following, you are provided information regarding a hypothesis test. You are asked to state the null and alternative hypotheses for the test. a) A college administrator fears that cheating is running rampant on their college campus. They state that they believe that more than 72% of all students have cheated on an exam before graduating. Ho: (1 Pt) Ha: (1 I\") b) A History professor in his commencement speech claims that the average graduate in the History Department had a GPA of at least 3.1. A random sample of 40 History graduates is obtained and their GPAs are calculated. Ho: up He: (1 pt) b) A spokesman for the White House states that exactly 43% of all community college graduates are planning on transferring to a 4-year college. A random sample of 220 community college graduates is obtained and the proportion transferring to a 4-year school is determined. Ho: (1 Pt) Ha: (1 pt) Spring 2021 page 13 of 14