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6. The sales manager at a certain company wants to determine if there is a significant...
a. find the critical value(s) b. find the test values c. reject/do not reject the hypothesis...
a. find the critical
value(s)
b. find the test values
c. reject/do not reject the hypothesis
The average sales price of new one-family houses in the Midwest is $246,200 and in the South is $261,800. A random sample of 40 houses in each region was examined with the following results. At the 0.10 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? South Midwest Sample size 40...
A scientist wants to determine whether or not the height of cacti, in foet, in Africa...
A scientist wants to determine whether or not the height of cacti, in foet, in Africa is significantly higher than the height of Mexican acti. He selects random samples from both regions and following data Africa: Mean - 12.1 Sample size - 201 Mean - 11.2 Sample size - 238 (a) Which of the following would be the correct hypothesis test procedure to determine if the height of cacti, in feet, in Africa is significantly higher than the height of...
also calculate: the critical value(s), the test values, and reject/do not reject the hypothesis The average...
also calculate: the critical
value(s), the test values, and reject/do not reject the
hypothesis
The average sales price of new one-family houses in the Midwest is $252,400 and in the South is $259,500. A random sample of 36 houses in each region was examined with the following results. At the 0.05 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? Midwest South Sample size 36 36 Sample...
The manager of Roth Corporation, wants to determine whether or not the type of work schedule...
The manager of Roth Corporation, wants to determine whether or not the type of work schedule for her employees has any effect on their productivity. She has selected 15 production employees at random and then randomly assigned 5 employees to each of the 3 proposed work schedules. The following table shows the units of production (per week) under each of the work schedules. Work Schedule (Treatments) Schedule 1 Schedule 2 Schedule 3 60 65 65 58 57 50 60 70...
The sales manager of a large automotive parts distributor wants to develop a model to forecast...
The sales manager of a large automotive parts distributor wants to develop a model to forecast as early as May the total annual sales of a region. If regional sales can be forecast, then the total sales for the company can be forecast. The number of retail outlets in the region stocking the company's parts and the number of automobiles registered for each region as of May 1 are the two the independent variables investigated. The data appear in Table...
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims...
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 42 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 37 sales representatives reveals that the mean number of calls made last week was 44. The standard deviation of the sample is 29 calls. Using the 0.100 significance level, can we conclude that the...
1.The owner of a golf course wants to determine if his golf course is more difficult...
1.The owner of a golf course wants to determine if his golf course is more difficult than the one his friend owns. He has 8 golfers play a round of 18 holes on his golf course and records their scores. Later that week, he has the same 8 golfers play a round of golf on his friend's course and records their scores again. The average difference in the scores (treated as the scores on his course - the scores on...
questions 1 and 2 Coastal Star Sales Corporation Questions Calculate a mean and a standard deviation...
questions 1 and 2
Coastal Star Sales Corporation Questions Calculate a mean and a standard deviation for each variable. 2. Set a 95 percent confidence interval around the mean for cach variable 3. Calculate the median, mode, and range for each variable 4. Organize the data for current sales into a frequency distribu- tion with three classes: (a) under $500,000, (b) $500,000 to from Dounload the data sets for this case Case www.cengage.com/marketing/zikmund or request them from your instractor 13.1...
help with questions 3 and 4 Coastal Star Sales Corporation Questions Calculate a mean and a...
help with questions 3 and 4
Coastal Star Sales Corporation Questions Calculate a mean and a standard deviation for each variable. 2. Set a 95 percent confidence interval around the mean for cach variable 3. Calculate the median, mode, and range for each variable 4. Organize the data for current sales into a frequency distribu- tion with three classes: (a) under $500,000, (b) $500,000 to from Dounload the data sets for this case Case www.cengage.com/marketing/zikmund or request them from your...
a) b) A statistics teacher wants to see if there is any difference in the abilities...
a)
b)
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. Final examination scores from a random sample of students enrolled today and from a random sample of students enrolled five years ago were selected. You are given the following information. Today 82 Five Years Ago 88 62 112.5 54 n 45 36 What conclusion can be reached about the difference in the...
a. find the critical
value(s)
b. find the test values
c. reject/do not reject the hypothesis
The average sales price of new one-family houses in the Midwest is $246,200 and in the South is $261,800. A random sample of 40 houses in each region was examined with the following results. At the 0.10 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? South Midwest Sample size 40...
A scientist wants to determine whether or not the height of cacti, in foet, in Africa is significantly higher than the height of Mexican acti. He selects random samples from both regions and following data Africa: Mean - 12.1 Sample size - 201 Mean - 11.2 Sample size - 238 (a) Which of the following would be the correct hypothesis test procedure to determine if the height of cacti, in feet, in Africa is significantly higher than the height of...
also calculate: the critical
value(s), the test values, and reject/do not reject the
hypothesis
The average sales price of new one-family houses in the Midwest is $252,400 and in the South is $259,500. A random sample of 36 houses in each region was examined with the following results. At the 0.05 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? Midwest South Sample size 36 36 Sample...
The manager of Roth Corporation, wants to determine whether or not the type of work schedule for her employees has any effect on their productivity. She has selected 15 production employees at random and then randomly assigned 5 employees to each of the 3 proposed work schedules. The following table shows the units of production (per week) under each of the work schedules. Work Schedule (Treatments) Schedule 1 Schedule 2 Schedule 3 60 65 65 58 57 50 60 70...
The sales manager of a large automotive parts distributor wants to develop a model to forecast as early as May the total annual sales of a region. If regional sales can be forecast, then the total sales for the company can be forecast. The number of retail outlets in the region stocking the company's parts and the number of automobiles registered for each region as of May 1 are the two the independent variables investigated. The data appear in Table...
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 42 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 37 sales representatives reveals that the mean number of calls made last week was 44. The standard deviation of the sample is 29 calls. Using the 0.100 significance level, can we conclude that the...
questions 1 and 2
Coastal Star Sales Corporation Questions Calculate a mean and a standard deviation for each variable. 2. Set a 95 percent confidence interval around the mean for cach variable 3. Calculate the median, mode, and range for each variable 4. Organize the data for current sales into a frequency distribu- tion with three classes: (a) under $500,000, (b) $500,000 to from Dounload the data sets for this case Case www.cengage.com/marketing/zikmund or request them from your instractor 13.1...
help with questions 3 and 4
Coastal Star Sales Corporation Questions Calculate a mean and a standard deviation for each variable. 2. Set a 95 percent confidence interval around the mean for cach variable 3. Calculate the median, mode, and range for each variable 4. Organize the data for current sales into a frequency distribu- tion with three classes: (a) under $500,000, (b) $500,000 to from Dounload the data sets for this case Case www.cengage.com/marketing/zikmund or request them from your...
a)
b)
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. Final examination scores from a random sample of students enrolled today and from a random sample of students enrolled five years ago were selected. You are given the following information. Today 82 Five Years Ago 88 62 112.5 54 n 45 36 What conclusion can be reached about the difference in the...
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