Calculus and Above

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I need help with this question: Use a standard normal
Use a standard normal distribution table to find the percentage of area above the standard normal curve that is specified. What is the percentage of the are above Z=1.48? … read more
Sandhya
Sandhya
Master's Degree
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Assume that a set of test scores is normally distributed
Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 10. Use the 68.95.99.7 rule to find the following quantities. 1). What is the percentage of scor… read more
Kofi
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Fact: For any normal distribution, 99.7 % of the total area
Fact: For any normal distribution, 99.7 % of the total area is between three standard deviations to the left of the mean and three standard deviation to the right of the mean. In other words, due to t… read more
Keith Pelletier
Keith Pelletier
Master's Degree
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A set of data items is normally distributed with a mean of
A set of data items is normally distributed with a mean of 450 Find the data item in this distribution that corresponds the -score of 1.5if the standard deviation is 70 … read more
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Assume that the set of test scores is normally distributed
Assume that the set of test scores is normally distributed with a mean of 120 and a SD of 10. I need to find the percentage of scores between 100 and 130 … read more
Mr. Gregory White
Mr. Gregory White
Master's Degree
Master's Degree
114 satisfied customers
Score ​-3.0 -2.8 ​-2.6 ​-2.4 ​ -2.2 ​-2.0 ​ -1.8 ​-1.6 ​-1.4
score ​-3.0 -2.8 ​-2.6 ​-2.4 ​ -2.2 ​-2.0 ​ -1.8 ​-1.6 ​-1.4 ​-1.2 Percentile 0.13 0.26 0.47 0.82 1.39 2.28 3.59 5.48 8.08 11.51​z-score ​-1.0 ​-0.8 ​-0.6 ​ -0.4 ​-0.2 0.2 0.4 0.6 0.8 1 Percentile 15.… read more
Ryan
Ryan
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Identify the scale of measurement of each of the following
Identify the scale of measurement of each of the following (nominal/ordinal/interval/ratio) A) age B) sea level C) zip code D). T-shirt size… read more
Ryan
Ryan
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ATTENTION RYAN:STASTIC HOMEWORK1. The amount of Jen's
Attachment: 2015-05-12_195353_exam_4_stastic.docx ATTENTION RYAN: STASTIC HOMEWORK 1. The amount of Jen's monthly electric bill is normally distributed with a mean of $160 and a standard deviation of … read more
Ryan
Ryan
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Question 1 of 20 5.0 Points The lifetimes of light bulbs of
Question 1 of 20 5.0 Points The lifetimes of light bulbs of a particular type are normally distributed with a mean of 270 hours and a standard deviation of 11 hours. What percentage of the bulbs has l… read more
Ryan
Ryan
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I need my statistics homework checked. I am not sure I understand
I need my statistics homework checked. I am not sure I understand the normal curve correctly. Homework questions below: Apply It #4: Using the 50%-34%-14% approximations of areas under the normal curv… read more
Ryan
Ryan
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In a normal distribution, what is the z score: a. above which
In a normal distribution, what is the z score: a. above which the top 5% of cases fall? b. above which the top 1% of cases fall? c. below which the bottom 5% of the cases fall? d. below which the bott… read more
Ryan
Ryan
Bachelor's Degree
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1) A set of 50 data values has a mean of 27 and a variance
1) A set of 50 data values has a mean of 27 and a variance of 16. I. Find the standard score (z) for a data value = 19. II. Find the probability of a data value < 19. 2) Find the area under the sta… read more
Math-John
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Pg.431 1)The mean of the sampling distribution of means is
Pg.431 1)The mean of the sampling distribution of means is equal to the mean of the population. T-F, and why or why not? 2) In the formula for the Confidence Interval for the Mean, if the Confidence C… read more
Ryan
Ryan
Bachelor's Degree
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I. a. What percentage of the area of the standard normal distribution
I. a. What percentage of the area of the standard normal distribution is between z = -2.00 and z = +2.00? How do you know this? b. Find the following: P(z > 2.43) II. 1. A set of 50 data values has… read more
Chirag
Chirag
Master's Degree
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1. With regards XXXXX XXXXX standard normal distribution complete
1. With regards XXXXX XXXXX standard normal distribution complete the following: (a) Find P(z > 0), the percentage of the standard normal distribution above the z-score of 0. (b) Find P(z < -2.2… read more
Osbert12
Osbert12
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The distribution of heights of young men is approximately Normal
The distribution of heights of young men is approximately Normal with mean 70 inches and standard deviation 2.5 inches. Use 68-95-99.7 rule to answer the following questions. a. what % of men are tall… read more
Ryan
Ryan
Bachelor's Degree
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A sample of 3000 observations has a mean of 82 and a standard
A sample of 3000 observations has a mean of 82 and a standard deviation of 16. Using the empirical rule, find what percentage of the observations fall in the intervals ± 1s, ± 2s, and ± 3s.… read more
Ryan
Ryan
Bachelor's Degree
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given mean 152.7; stanard dev. +/-17.6; range of 109-176; median
given mean 152.7; stanard dev. +/-17.6; range of 109-176; median 154.5; what is the percentage… read more
Scott
Scott
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Master's Degree
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