The mean score of a placement exam for entrance into a math class is 80 points, with a standard deviation of 10 points. Use the Empirical Rule to answer this question Assume 1200 students wrote the placement exam, how many students scored between 70 points to 100 points in the entrance exam? Select one: O A. 1100 O B. 978 students O C. 980 O D. 900 O E. 100

Q: The average travel time to work for a person living and working in Kokomo, Indiana is 17 minutes. I…

A:

Q: In a standardized IQ test, the mean score is 100 and the standard deviation is 15. According to the…

A:

Q: Find the Absolute Quartile Deviation for the following data, In the dashed line put your…

A: Dispersion is a statistical term that describes the size of the distribution of values expected for…

Q: The heights of women aged 2020 – 2929 in the United States are approximately Normal with mean…

A: Obtain the z‑score for a woman 5.5 feet tall. The z‑score for a woman 5.5 feet tall is obtained…

Q: The heights of 100 male students are normally distributed with a mean height of 165 centimeters and…

A: Given data: Sample size = 100 Population mean = 165 Population standard deviation = 5.9

Q: The partial pressure of oxygen, PaO2, is a measure of the amount of oxygen in th blood. Assume that…

A: From the given information, μ=38σ=9 Here, the readings follows normal distribution. A. The PaO2…

Q: The weights of items from a manufacturing process follow a normal distribution with mean 90 grams…

A:

Q: he mean SAT verbal score is 448, with a standard deviation of 95. Use the empirical rule to…

A:

Q: Use the following data obtained from ages of the last six U. S. Presidents at the time of their…

A: Mean: The mean is the sum of observations divided by the number of observations. that is, Mean = x =…

Q: Scores turned in by an amateur golfer at the Bonita Fairways Golf Course in Bonita Springs, Florida,…

A: Given information- We have given golfers score in two different years. Calculating mean and standard…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A: Given :Population standard deviation = 2.8 daysCompany wants to be 95% confident that the true mean…

Q: The weight of an organ in adult males has a bell-shaped distribution with a mean of 310 grams and a…

A:

Q: The mean IQ score of adults is 100, with a standard deviation of 20. Use the Empirical Rule to find…

A:

Q: A police radar gun is used to measure the speeds of cars on a highway. The speeds of cars are…

A:

Q: In a mango farm of 250 trees, the mean harvest is 96.5 kilos of fruit per tree with a standard…

A: Given,sample size(n)=250mean(μ)=96.5standard deviation(σ)=8.4

Q: The height of adult men in the United States is normally distributed with a mean of 70 inches and a…

A: Z = -0.67 Mu = 70 S = 3

Q: The distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Assuming that the heights of college women are normally distributed with mean 69 inches and standard…

A: Since you have posted multiple sub-parts of question , we will solve first 3 sub-parts of question…

Q: What is the average score for those who are willing to rise to the challenege with the standard…

A: Here X takes values 1, 2, 3, 4, 5 with following frequencies The average score is calculated using…

Q: (e) How good was the Denver Broncos' 2013 NFL season compared to the rest of the football teams that…

A: We have to find out z score..

Q: Assume that the distribution of scores on a college entrance exam is normal, with a mean of 500 and…

A: We have to find z score and from z table probability.

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: The ages of employees in a certain company were bell-shaped with mean 28 and standard deviation 5.…

A:

Q: An accountant is studying the attendance levels at the concerts of a touring rock band. She finds…

A: Let x¯ be the mean number of attendees at a performance in her study for 62 performances which…

Q: The mean length of a human pregnancy is 267 days, with a standard deviation of 12 days. Use the…

A: Given data,Mean μ=267sd σ=12P(243<X<291)=?

Q: The weights, in pounds, of a group of dogs are:          18, 31, 22, 46, 55, 28.    Calculate the…

A: Given Data The weight of a group of dogs are: 18,31,22,46,55,28   The size of group is N=6   The…

Q: A nationwide survey showed that the average selling price for bookbags is $35 with a standard…

A:

Q: 4. Compute the average deviation on the data below Test scores X-Х bar Xi 57 60 65 70 78 s0 82 85…

A: 4. Formula for Average deviation is, Average deviation=∑x'n Where x'=x-x¯ x¯=∑xin  , n=10…

Q: A sample was done, collecting the data below. Calculate the standard deviation, to one decimal…

A:

Q: The weight of an organ in adult males has a bell-shaped distribution with a mean of 310 grams and a…

A: Empirical rule  μ±σ = 68%μ±2σ = 95%μ±3σ = 99.7%

Q: A sample was done, collecting the data below. Calculate the standard deviation, to one decimal…

A: Solution: The given data is

Q: A man recorded the speeds of cars driving past his​ house, where the speed limit was 25 mph. The…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: A B. 1 Doctor visits 0. 1 2. Frequency 7. 149 121 4. 5 54 4. 450 110 12 8. 12 6. 10 8. 14 11 6. 12…

A: From the provided information, A B Doctor visits Frequency 0 7 1 149 2…

Q: Assume that the distribution of a college entrance exam is normal with a mean of 500 and a standard…

A: Consider the equation

Q: verage price for a particular car is $20,300 with a standard deviation of $1,600. You are shopping…

A: Given data,Mean μ=20300sd σ=1600x=21950z-score=?

Q: Q2/ The number of hours worked by 10 employees of small building firm during a week were: 45 46 34…

A: Given data, 45,46,34,47,44,42,46,42,43,44

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

A: Given Information:

Q: The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a…

A: Given that the mean of 70 minutes and a standard deviation of 10 minutes. Suppose the students are…

Q: A local university administers a comprehensive examination to the recipients of a B.S. degree in…

A: The sample standard deviation can be calculated as:

Q: A sample was done, collecting the data below. Calculate the standard deviation, to one decimal…

A: Explanation and solutions is given below....

Q: The mean of a distribution is 50 and the standard deviation is 6. Using the empirical rule, find the…

A:

Q: The weight of an organ in adult males has a​ bell-shaped distribution with a mean of 330 grams and a…

A: As per our guidelines we are supposed to answer only 3 subparts of any questions so i am solving…

Q: In a standardized IQ test, the mean score is 100 and the standard deviation is 15. According to the…

A:

Q: The annual incomes of all MBA degree holders working in Los Angeles have a bell-shaped distribution…

A: From the provided information, Mean (µ) = $78,000 Standard deviation (σ) = $11,000 Let X be a random…

Q: Use the fact that IQ score are normally-distributed with a meal of 100, standard deviation of 15 to…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: The weights of the contents of cans of tomato sauce produced by a company are normally distributed…

A:

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: From the provided information, Mean (µ) = 65 inches Standard deviation (σ) = 2.5 inches

Q: The weight of an organ in adult males has a​ bell-shaped distribution with a mean of 330 grams and a…

A:

Q: Assume that the distribution of scores on a college entrance exam is normal, with a mean of 500 and…

A: As per guideline expert have to answer first 3 subparts only.

Q: A certified mechanic was timed for the repair of an automobile on 14 separate occasions. Over the…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.