The weights of randomly selected 5 female students and 5 male students are given bythe following:weights for male students:160,165,152,158,178weights for female students:169,154,158,156,162.Let the weight distributions of male and female students follow N(μ1,σ1) and N(μ2,σ2)respectively.
TestH0:μ1=μ2vs.μ16=μ2at 5% level of significance. UseP(t8>2.30) =0.025. (5 points)
The weights of randomly selected 5 female students and 5 male students are given bythe following:weights...
The weights of randomly selected 5 female students and 5 male students are given by the following: weights for male students:160,165,152,158,178 weights for female students:169,154,158,156,162. Let the weight distributions of male and female students follow N(μ1,σ1) and N(μ2,σ2) respectively. • Test H0 : u1 = μ2 VS u1 cant equal u2 at 5% level of significance. Use P(t8>2.30) =0.025. (5 points)
The weights of randomly selected 5 female students and 5 male students are given by the following:weights for male students:160,165,152,158,178weights for female students:169,154,158,156,162.Let the weight distributions of male and female students follow N(μ1,σ1) and N(μ2,σ2)respectively.• TestH0:σ1=σ2vs.H1:σ16=σ2at 5% level of significance. UseF4,4,0.025= 0.10F4,4,0.975= 9.60.
The weights of male and female students in a class are summarized in the following boxplots Males Females 0 100 120140160 180 200 220 240 Weight (pounds) Which of the following is NOT correct? a) The male students have less variability than the female students. b) About 50% of the male students have weights between 150 and 185 lbs. c) The mean weight of the female students is about 120 because of symmetry d) The median weight of the male...
Of n1 randomly selected male smokers, X1 smoked filter cigarettes, whereas of n2 randomly selected female smokers, X2 smoked filter cigarettes. Let P1 and P2 denote the probabilities that a randomly selected male and female, respectively, smoke filter cigarettes.
Do male and female college students have the same distribution of living arrangements? Use a level of significance of 0.05. Suppose that 101 randomly selected male college students and 51 randomly selected female college students were asked about their living arrangements: dormitory, apartment, or other. The results are shown in Table. Do male and female college students have the same distribution of living arrangements? Dormitory Apartment Other Male 41 34 26 Female 19 27 5 What is the chi-square test-statistic...
Question 11-In a large statistics class. PM 100% of all students are male and the rest are female. The heights of all male students follow a normal distribution with mean Ax and standard deviation σΜ. The heights of all female students follow a normal distribution with mean Mr and standard deviation σ Suppose a random sample of n students is selected independently. Let H be the mean height of these n randomly selected students. a. Determine E[H) and Va[FI /...
Do male and female servers at Swank Bar work the same number of hours? A sample of 75 female servers worked an average of 33 hours per week, with a standard deviation of 2. A sample of 75 male servers worked an average of 24 hours per week, with a standard deviation of 5.Let μ1μ1 and μ2μ2 represent the typical number of hours worked by all female and male servers at Swank Bar, respectively. Estimate with a 97% confidence level how many more hours...
Heights (om) and weights () are measured for 100 randomly selected adut males, and range from heights of 134 to 193 cm and weights of 41 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x = 167.69 cm, y 81 47 kg, r= 0.172, P value-o087, and y--101 + 1.07x Find the best predicted value of y weight given an adult male who is 139 cm tall. Use a 0.01...
Do male and female servers at Swank Bar work the same number of hours? A sample of 60 female servers worked an average of 29 hours per week, with a standard deviation of 3. A sample of 60 male servers worked an average of 22 hours per week, with a standard deviation of 2. Let μ1 and μ2 represent the typical number of hours worked by all female and male servers at Swank Bar, respectively. Estimate with a 90% confidence...
Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 137 to 191 cm and weights of 40 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x =168.01 cm, y =81.54 kg, r=0.274 P-value=0.0060 and y with = - 106+1.02x Find the best predicted value of y with (weight) given an adult male who is 170 cm tall. Use a 0.10 significance...