A study of 55 apple trees showed that the average number of apples per tree was...
A study of 55 apple trees showed that the average number of
apples per tree was 725. The standard deviation of the population
is 100. Which of the following is the 
confidence interval for the mean
number of apples per tree for all trees?
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A study of 55 apple trees showed that the average number of
apples per tree was...
A study of peach trees found that the average number of peaches per tree was 625....
A study of peach trees found that the average number of peaches per tree was 625. The standard deviation of the population is 35 peaches per tree. A scientist wishes to find the 99% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to obtain an average accurate to within 18 peaches per tree? 4 21 23 26
A study of peach trees found that the average number of peaches per tree was 525....
A study of peach trees found that the average number of peaches per tree was 525. The standard deviation of the population is 105 peaches per tree. A scientist wishes to find the 95% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to obtain an average accurate to within 10 peaches per tree? Hint: Round n up the nearest whole number.
An apple farm yields an average of 38 bushels of apples per tree when 20 trees...
An apple farm yields an average of 38 bushels of apples per tree when 20 trees are planted on an acre of ground. Each time 1 more tree is planted per acre, the yield decreases by 1 bushel (bu) per tree as a result of crowding. How many trees should be planted on an acre in order to get the highest yield? In order to get the highest yield, trees should be planted on an acre.
Appplications of differentiation If 30 apple trees are planted in a fixed area of land, each tree yields 400 apples on average. The yield will decrease about 10 apples per tree for each additional tre...
Appplications of differentiation If 30 apple trees are planted in a fixed area of land, each tree yields 400 apples on average. The yield will decrease about 10 apples per tree for each additional tree planted in the land. How many trees should be planted for maximum total yield? Justify your result.
1) A study of 100 professors showed that the time they spent on the average in...
1) A study of 100 professors showed that the time they spent on the average in creating test questions was 20.0 minutes per question. The standard deviation of the population is 1. Which of the following is the 90% confidence interval for the average number of minutes it takes to create a test question? a) (18.36, 21.64) B)(19.74, 20.26) c)(19.84, 20.16) D)(19.88, 20.12) 2) 1) A previous analysis of paper boxes showed that the standard deviation of their lengths is...
A study of 65 bolts of carpet showed that their average length was 78.2 yards. The...
A study of 65 bolts of carpet showed that their average length was 78.2 yards. The standard deviation of the population is 1.6 yards. Which of the following is the 80% confidence interval for the mean length per bolt of carpet?
A study of 45 white mice showed that their average weight was 4.7 ounces. The standard...
A study of 45 white mice showed that their average weight was
4.7 ounces. The standard deviation of the population is 0.7 ounces.
Which of the following is the 80% confidence interval for the mean
weight per white mouse?
Question 12 8 pts A study of 80 mice showed that their average weight was 6.8...
Question 12 8 pts A study of 80 mice showed that their average weight was 6.8 ounces. The standard deviation of the population is 0.9 ounces. Which of the following is the 99% confidence interval for the mean weight per mouse? (5.4408, 8.7502) (6.0408,7.9502) (6.5408, 7.0592) (5.9408,8.1502) Question 13 8 pts 57 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 13,5 pounds; the population standard deviation for all packages is...
10) A study of 45 bolts of carpet showed that their average length was 80.2 yards....
10) A study of 45 bolts of carpet showed that their average length was 80.2 yards. The standard deviation of the population is 4.6 yards. Which of the following is the 80% confidence interval for the mean length per bolt of carpet? A) 78.4 < μ < 82.0 C) 79.6 < μ < 80.8 B) 79.8u 80.6 D) 79.3 <u < 81.1
An apple a day: Following are the numbers of grams of sugar per 100 grams of...
An apple a day: Following are the numbers of grams of sugar per 100 grams of apple in a random sample of 6 Red Delicious apples. Assume the population is normally distributed. Construct a 99% confidence interval for the standard deviation of the number of grams of sugar. Round the answers to two decimal places. 11.9 12.4 13.2 13.5 12.2 10.4
An apple farm yields an average of 38 bushels of apples per tree when 20 trees are planted on an acre of ground. Each time 1 more tree is planted per acre, the yield decreases by 1 bushel (bu) per tree as a result of crowding. How many trees should be planted on an acre in order to get the highest yield? In order to get the highest yield, trees should be planted on an acre.
A study of 45 white mice showed that their average weight was
4.7 ounces. The standard deviation of the population is 0.7 ounces.
Which of the following is the 80% confidence interval for the mean
weight per white mouse?
Question 12 8 pts A study of 80 mice showed that their average weight was 6.8 ounces. The standard deviation of the population is 0.9 ounces. Which of the following is the 99% confidence interval for the mean weight per mouse? (5.4408, 8.7502) (6.0408,7.9502) (6.5408, 7.0592) (5.9408,8.1502) Question 13 8 pts 57 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 13,5 pounds; the population standard deviation for all packages is...
10) A study of 45 bolts of carpet showed that their average length was 80.2 yards. The standard deviation of the population is 4.6 yards. Which of the following is the 80% confidence interval for the mean length per bolt of carpet? A) 78.4 < μ < 82.0 C) 79.6 < μ < 80.8 B) 79.8u 80.6 D) 79.3 <u < 81.1
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