PLEASE ANSWER THE FOLLOWING, I WILL GIVE THUMBS UP!!! PLEASE ANSWER THE FOLLOWING, I WILL GIVE THUMBS UP!!! I WILL GI
Posted: Sun Jul 10, 2022 10:11 am
PLEASE ANSWER THE FOLLOWING, I WILL GIVE THUMBSUP!!! PLEASE ANSWER THE FOLLOWING, I WILL GIVE THUMBSUP!!! I WILL GIVE THUMBSUP!!!
A study is done to compare the wages of day care workers in two states. The wages are Normally distributed. The following data is available: n = 25, 1 n 2 X = 20, x 1 2 = 12.8, s = 1.8 1 = 10.7, s₂ = 1.6 2 We are testing the null hypothesis that the population means are equal. We cannot assume that the variances are equal. We have computed the degrees of freedom to be 42. Find the test statistic. (Provide answer to two decimal places)
A new weight-loss program claims that participants will lose an average of more than 10 pounds after completing it. The data table shows the weights of five individuals before and after the program. weight before weight after 1 264 240 H1: @ , > 10. d 2 220 223 3 285 267 4 264 250 We need to test the hypothesis that the population mean of differences exceed 10. That is, НО: u Ma < 10 5 195 175 Use 5% level of significance. Find the test statistic. (Provide two significant digits to the right of the decimal point)
To test whether sales and day of the week are independent, the following random sample was collected: sales - high 15 25 a week day a day on week-end sales - low 10 20 sales moderate 30 35 For example, in the sample, in 30 observations it was a week day with moderate sales; in 25 observations it was a day on a week end with high sales, etc. If sales and day of the week are independent, what would be the "expected frequency" of a week day with low sales in the above data? (Provide answer to one decimal place accuracy)
A person can take either of two routes to work, through Matteson or Richton Park. Both take on average 35 minutes, and travel times are Normally distributed. But are the variances of the travel times different? A random sample with n = 8 using the Matteson route, and another random sample with n = 6 using the Richton Park route, showed a variance of 40 (units: square minutes) and 30 respectively. To test whether the variances are different, the following test of hypothesis is to be carried out: HO: 0² = 0²/ Hiơ tỏ 1 To test this at 5% level of significance, what is the critical value for the test statistic? (Give two decimal places)
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A new weight-loss program claims that participants will lose an average of more than 10 pounds after completing it. The data table shows the weights of five individuals before and after the program. weight before weight after 1 264 240 H1: @ , > 10. d 2 220 223 3 285 267 4 264 250 We need to test the hypothesis that the population mean of differences exceed 10. That is, НО: u Ma < 10 5 195 175 Use 5% level of significance. Find the test statistic. (Provide two significant digits to the right of the decimal point)
To test whether sales and day of the week are independent, the following random sample was collected: sales - high 15 25 a week day a day on week-end sales - low 10 20 sales moderate 30 35 For example, in the sample, in 30 observations it was a week day with moderate sales; in 25 observations it was a day on a week end with high sales, etc. If sales and day of the week are independent, what would be the "expected frequency" of a week day with low sales in the above data? (Provide answer to one decimal place accuracy)
A person can take either of two routes to work, through Matteson or Richton Park. Both take on average 35 minutes, and travel times are Normally distributed. But are the variances of the travel times different? A random sample with n = 8 using the Matteson route, and another random sample with n = 6 using the Richton Park route, showed a variance of 40 (units: square minutes) and 30 respectively. To test whether the variances are different, the following test of hypothesis is to be carried out: HO: 0² = 0²/ Hiơ tỏ 1 To test this at 5% level of significance, what is the critical value for the test statistic? (Give two decimal places)