A teacher gives a test to a large group of students. The results are closely approximated...
A teacher gives a test to a large group of students. The results are closely approximated by a normal curve. The mean is 73,with a standard deviation of 7. The teacher wishes to give A's to the top 5.5% of the students and F's to the bottom 5.5%. A grade of B is given to the next 16.4%, with D's given similarly. All other students get C's. Find the bottom cutoff for a grade of A. The bottom cutoff for an A is
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A teacher gives a test to a large group of students. The results
are closely approximated...
Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of...
Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75 and a standard deviation of 9. The teacher wishes to give A's to the top 5% of the students and F's to the bottom 5%. The next 15% in either direction will be given B's and D's, with the other students receiving C's. Find the bottom cutoff for receiving an A grade. (You may need to use the standard normal distribution table. Round...
The undergraduate grade point averagos (UGPA) of students taking an admissions test in a recant year...
The undergraduate grade point averagos (UGPA) of students taking an admissions test in a recant year can be approximated by a normal distribution, as shown in the figure (a) what is the minimum UGPA that would stil pico a student in the top 15% of UGPAS? (b) Batween what two values does the middle SO% of the UGPAs lie? 7122 2.44 122 Gade poirt averge n a larpe section of a statisics clees, the that the top 10% recoive A's,...
Winter 2018 AT 103 Test II Chapters 6-11 a( \ 1. The average number of miles that 90 truckers drove in a day was 540 with a standard what is the 99% confidence interval of the true mean number of...
Winter 2018 AT 103 Test II Chapters 6-11 a( \ 1. The average number of miles that 90 truckers drove in a day was 540 with a standard what is the 99% confidence interval of the true mean number of deviation of 40 miles, miles driven by all truckers? Dr. Christina Cuttleman, a nutritionist, claims that the average number ofcalories in a serving of popcorn is 75 with a standard deviation of 7. A sample of 50 servings of popcorn...
41. Find the area under the standard normal curve to the left of a, z= 1.18...
41. Find the area under the standard normal curve to the left of a, z= 1.18 b. z--1.85 c. 2-2.48 d. z-0.08 e, z=-1.25 g. z 0.05 h.-0.92 i. z- 0,00 j. z 3.24 4 Aert machn rodcas compoets havientinetes A of measuring samples of these components, it is found that the standard deviation is 0.2 centimeters. A test is carried out on a sample to check whether the data on the lengths of components is normally distributed and it...
Please answer all of the following. The boxplot below shows the number of contacts in their...
Please answer all of the following.
The boxplot below shows the number of contacts in their cell by gender for my Spring 2018 statistics classes. Using the boxplot, answer the 4 questions below. Boxplot of CellNumbers 900 800 700 600 500 400 300 200 100 0 Male Female Gender CellNumbers Which distribution has 3 outliers? Which distribution appears skewed right, excluding 1. Male 1 outliers? 2. Female Which distribution is 1 3. Both less variable (has the smaller IQR)? 4....
Please Use your keyboard (Don't use handwriting) *******Please re-write my answer I need new and unique...
Please Use your keyboard (Don't use handwriting) *******Please re-write my answer I need new and unique answers, please. (Use your own words, don't copy and paste)***** Case Study 1: Should a Computer Grade Your Essays? Would you like your college essays graded by a computer? Well, you just might find that happening in your next course. In April 2013, EdX, a Harvard/MIT joint venture to develop massively open online courses (MOOCs), launched an essay-scoring program. Using artificial intelligence technology, essays...
Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75 and a standard deviation of 9. The teacher wishes to give A's to the top 5% of the students and F's to the bottom 5%. The next 15% in either direction will be given B's and D's, with the other students receiving C's. Find the bottom cutoff for receiving an A grade. (You may need to use the standard normal distribution table. Round...
The undergraduate grade point averagos (UGPA) of students taking an admissions test in a recant year can be approximated by a normal distribution, as shown in the figure (a) what is the minimum UGPA that would stil pico a student in the top 15% of UGPAS? (b) Batween what two values does the middle SO% of the UGPAs lie? 7122 2.44 122 Gade poirt averge n a larpe section of a statisics clees, the that the top 10% recoive A's,...
Winter 2018 AT 103 Test II Chapters 6-11 a( \ 1. The average number of miles that 90 truckers drove in a day was 540 with a standard what is the 99% confidence interval of the true mean number of deviation of 40 miles, miles driven by all truckers? Dr. Christina Cuttleman, a nutritionist, claims that the average number ofcalories in a serving of popcorn is 75 with a standard deviation of 7. A sample of 50 servings of popcorn...
41. Find the area under the standard normal curve to the left of a, z= 1.18 b. z--1.85 c. 2-2.48 d. z-0.08 e, z=-1.25 g. z 0.05 h.-0.92 i. z- 0,00 j. z 3.24 4 Aert machn rodcas compoets havientinetes A of measuring samples of these components, it is found that the standard deviation is 0.2 centimeters. A test is carried out on a sample to check whether the data on the lengths of components is normally distributed and it...
Please answer all of the following.
The boxplot below shows the number of contacts in their cell by gender for my Spring 2018 statistics classes. Using the boxplot, answer the 4 questions below. Boxplot of CellNumbers 900 800 700 600 500 400 300 200 100 0 Male Female Gender CellNumbers Which distribution has 3 outliers? Which distribution appears skewed right, excluding 1. Male 1 outliers? 2. Female Which distribution is 1 3. Both less variable (has the smaller IQR)? 4....
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