What do the results of this hypothesis test run in stata mean? test esteem80 = athlets ( 1) esteem80 - athlets = 0 F( 1, 6594) = 6.35 Prob > F = 0.0117
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- a data set includes 109 body temperatures of healthy adult humans having a mean of 98.3 f and a standarddeviationn of 0.54F construct a 99% confidence interval estimate of the human body temperature of all healthy humans. What does the sample suggest about the use of 98.6 F as the mean body temperature?2) (9.2) Suppose a random sample of 1001 Americans age 15 or older were asked "How much time do you spend eating or drinking per day?" Of the 1001 participants, the mean amount of time spent eating or drinking per day is 1.22 hours with a standard deviation of 0.65 hours. Determine a 99% confidence interval for the mean amount of time Americans age 15 or older spend eating or drinking each day.Scores of an IQ test have a beli shaped distrihution with a mean of 100 and a standard deviation of 11. Use the empirical rule to determine the following (a) What perceniage of people has an IQ score between 67 and 133? (D) What percentage of people has an 1Q score less than 67 or greater than 133? (c) What percentage of people has an 1Q score greater than 111? ta) 1% (Type an integer or a decimal (b) % (Type an integer or a decimal (c) % (Type an integer or a decimal) Next Statcrunch
- The wear resistances of two types of automobile tires were compared on road test samples of n1 = n2 = 100 tires for each type and the number of miles traveled to deterioration, defined as a specific amount of tire wear, was recorded. tire. The test results are shown in the table. Estimate (mu subscript 1 minus mu subscript 2), the difference in the mean miles to complete wear, using a 99% confidence interval. Is there a difference in the average wear quality for the two types of tires? summary of sample data for two types of tires rim 1: x1 = 26400 miles s1 ^ 2 = 1,440.00 Rim 2: x2 = 25,100 miles s2 ^ 2 = 1,960,00011/12 What is the 90% confidence interval for the mean difference in pulse rates of men versus women? The lower bound is_. The upper bound is_. Round to two decimal places as needed. should we reject or do not reject this?200 patients involves 200 particpants in comparing an experimental medication to a placebo. Each person enrolled is randomized to recieve either the experimental medication or placebo. Data is collected at the end of the study after 6 weeks. Test if there is significant difference in mean systolic blood pressures between grouos using a=0.05. Meqn of 174 standard deviation of 19.5 Mean systolic blood pressure: experimental (n= 100) 120.2 (15.4) placebo (100) 131.4 (18.9) Hypertensive (%) exp. 14 placebo 22 Side effects (%) exp. 6 placebo 8
- Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 12. Use the empirical rule to determine the following. (a) What percentage of people has an 1Q score between 64 and 136? (b) What percentage of people has an IQ score less than 76 or greater than 124? (c) What percentage of people has an IQ score greater than 124?Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 19. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 81 and 119? (b) What percentage of people has an IQ score less than 43 or greater than 157? (c) What percentage of people has an IQ score greater than 119? (a)% (Type an integer or a decimal.)Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 20. Use the empirical rule to determine the following (a) What percentage of people has an IQ score between 40 and 160? (b) What percentage of people has an IQ score less than 60 or greater than 140? (c) What percentage of people has an IQ score greater than 120? (a) % (Type an integer or a decimal.)
- Formulate the null and alternate hypotheses that will allow you to test for statistical significance regarding the mean decrease in the systolic pressure reading caused by the drug mean=4.035 stdev=13.236 median=1.304 n=1000 sucess=517A random sample of the starting salaries of 35 randomly selected graduates with bachelors degrees last year game sample mean 41,202 and standard deviation 7,621 respectivly. test weather the data provide sufficient evidence at 5% confidence, to conclude that the mean starting salary of all graduates last year is less than the mean of all ggraduates two years before, $43,589.Twenty-two young asthmatic volunteers were studied toassess the short-term effects of sulfur dioxide (SO2) exposure under various conditions [12]. The baseline data inTable 12.30 were presented regarding bronchial reactivity to SO2 stratified by lung function (as defined by forcedexpiratory volume / forced vital capacity [FEV1/FVC]) atscreening.*12.6 Test the hypothesis that there is an overall mean difference in bronchial reactivity among the three lung-functiongroups.