Let S={a,b,c} be a subset of P={1,2,3,...,18, 19,20} such that b=c-1 and a=b+4. Find the standard deviation of S if S has no mode but with midrange equals to 13.
Q: Suppose that the readings on the thermometers are normally distributed with a mean of 0∘0∘ and a…
A:
Q: For a certain distribution of 100 items the three moments about the mean 50 are found to be 144, 4,…
A: Answer: For the given data,
Q: 00 freshmen at Arundel University took part in a math comprehension test. The scores were normally…
A: The middle (center) of the normal curve represents the mean of the curve. The normal curve is the…
Q: Suppose duration of pregnancy has a mean of 266 days and a standard deviation of 16 days. Use…
A: (a)The proportion of pregnancies lasting between 250 days and 282 days is,
Q: Suppose that the number of Facebook friends users have is normally distributed with a mean of 117…
A: Standard normal distribution:The standard normal distribution is a special case of normal…
Q: A set of math exam scores are normally distributed with a mean of 75 points and a standard deviation…
A: (a) Obtain the probability that X greater than 71. The probability that X greater than 71 is…
Q: A box contains 5 Balls labeled with the number "1", 3 balls labeled with the number "2", and 1 ball…
A:
Q: Determine which score corresponds to the higher relative position. 16) Which is better: a score of…
A: GivenFirstMean(μ)=70standard deviation(σ)=8SecondMean(μ)=75standard deviation(σ)=4
Q: There are 4 agents at the airline counter serving all the passengers. The arrival rate for…
A: The given data is as follows:Arrival rate, Average time for each agent to check in a passenger is 2…
Q: Zニー2.25 and z:t0.25 Zニ- 0.67 andz =t 0-67 zニ--20 and Zニ+1.20
A:
Q: r. If the 17. A walk at 4 miles per hour burns an average of 300 calories standard deviation of the…
A: Given: μ = 300 σ = 8
Q: if we are at the unique point where the sum of all deviations equals zero, where are we?
A: If the sum of all deviations is zero in a data set, it means that the data points are perfectly…
Q: 9??
A: Step 1: Find the proportion less than 172 days First find the z-score:z=3.5172−175=−0.85714 Use…
Q: 4. Class A had a standard deviation of 2.4 on a test, while Class B had a standard deviation of 1.2…
A: 4. Standard deviation: Standard deviation determines how the individual values of the data deviate…
Q: Suppose that the duration of a particular type of criminal trial is known to have a mean of 24 days…
A: 1. It is given that, åX~ N (216, 24). The probability that the total length of the 9 trials is at…
Q: Juan takes a biology test and he gets 84. The mean of the class was 76 with a standard deviation of…
A: Solution
Q: 4) An investor is trying to decide between 2 mutual funds. Mutual fund #1 offers a slightly higher…
A:
Q: S Suppose the midterm grades for 10 students are the following: 70, 65, 75, 80, 63, 90, 71, 75, 93,…
A: You have posted multiple questions, according to the guideline I am allowed to solve the first…
Q: is a sample with 64 variables X1, X2.. X64 and each X has a mean μ= 50 and standard deviation, σ =…
A:
Q: Explain please
A: X-Transformation and Y-Transformation: These terms aren't commonly used in statistics for…
Q: Bob has a bulb factory that produces two types of bulbs: white light (x) and color light (y). It is…
A:
Q: A manufacturing company's manufactures steel rods. The lengths of the rods are normally distributed…
A: The provided information are:
Q: females have pulse rates that are normally distributed with a mean of 75.0 beats per minute and a…
A: Females have pulse rate normally distributed with mean of 75.0 beats per minute with standard…
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…
Q: he mean weight of a breed of yearling cattle is 1123 pounds. Suppose that weights of all such…
A: Normal distribution in the center is generally denser and basically less dense at the tails. There…
Q: The mean and standard deviation of the marks obtained by the students of Business statistics is 60…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at…
Q: I will use the calculator command T-Test or T-interval on the difference of the samples if […
A: The objective is to identify the commands used on a calculator for the given tests.
Q: In Semester 1 2020/2021 study session, Sara has registered three courses namely Statistics, Research…
A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…
Q: tor at a college noted that the grades students were normally distributed with a mean o and a…
A: Let "a" be the minimum score needed to make an A. A person scoring at least "a" marks will be…
Q: Number 2
A: From the above bar graph, we can consider the following frequency distribution as, Class 60-65…
Q: Suppose that the number of Facebook friends users have is normally distributed with a mean of 141…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: suppose you have two numbers with variance 9. what is the range of the this set
A:
Q: he average lifetime of the bulbs produced in factory A is 2500 hours and their standard deviation is…
A: Given : Factory A : X1 = 2500σ1 = 250 Factory B : X2 = 2100σ2 = 150
Q: Jojo has just been given a 10-question multiple-choice quiz in history class. Each problem has five…
A: Let X denote the number of correct answers and it follows binomial distribution with parameters (n =…
Q: Suppose that the average number of Facebook friends users have is normally distributed with a mean…
A: 1. Central Limit Theorem for mean: If a random sample of size n is taken from a population having…
Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…
A: Standard normal distribution: The standard normal distribution is a special case of normal…
Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…
A:
Q: Suppose the number of orange M&Ms in a bag are normally distributed with a mean = 13 and a standard…
A: From the provided information, Mean (µ) = 13 Standard deviation (σ) = 1.67 X~N (13, 1.67)
Q: The mean of the time it takes for a product to arrive from China is 60 days and the standard…
A: Given: Mean time taken for a product to arrive from China is 60 days, that is, μ=60. Standard…
Q: uppose that, at the end of last semester, Marie gave her introductory statistics class a final exam.…
A: From the provided information, The number of students who score between (60-80) point = (total…
Q: Let S={a,b,c} be a subset of P={1,2,3,...,18,19,20} such that b=c-1 and a=b+4. Find the standard…
A:
Let S={a,b,c} be a subset of P={1,2,3,...,18, 19,20} such that b=c-1 and a=b+4. Find the standard deviation of S if S has no
Step by step
Solved in 2 steps with 4 images
- -) From the values: (63, 60,74, 91, 93, 35, 72, 71, 84, 80)Find: 1- The Range 2- The number of classes 3- The length of classb-) Find out which is more dispersion variable (X) or variable (Y), if the Arithmetic Meanand the Standard Deviation of them are as followsThere is a sample with 64 variables X1, X2.. X64 and each X has a mean μ= 70 and standard deviation, σ = 20. a) What is the probability that sample mean lies between 50 and 90?b) What is probability that sample mean more than 60?Please answer ASAP
- Suppose that you have a set of data that has a mean of 34 and a standard deviation of 6. a) Is the point 28 above, below, or the same as the mean. How many standard deviations is 28 from the mean. b) Is the point 46 above, below, or the same as the mean. How many standard deviations is 46 from the mean. c) Is the point 43 above, below, or the same as the mean. How many standard deviations is 43 from the mean. d) Is the point 20 above, below, or the same as the mean. How many standard deviations is 20 from the mean.Hugo averages 41 words per minute on a typing test with a standard deviation of 7.5 words per minute. Suppose Hugo's words per minute on a typing test are normally distributed. Let X = the number of words per minute on a typing test. Then, X - N(41, 7.5). Suppose Hugo types 45 words per minute in a typing test on Wednesday. The z-score when x = 45 is x = 45 is This z-score tells you that standard deviations to the (right/left) of the mean, Correctly fill in the blanks in the statement above. Select the correct answer below: Suppose Hugo types 45 words per minute in a typing test on Wednesday. The z-score when x = 45 is -0.533. This z-score tells you that x = 45 is 0.533 standard deviations to the left of the mean, 41. Suppose Hugo types 45 words per minute in a typing test on Wednesday. The z-score when x = 45 is -0.381. This z-score tells you that x = 45 is 0.381 standard deviations to the left of the mean, 41. Suppose Hugo types 45 words per minute in a typing test on Wednesday. The…Q3) The following data represents the score of 40 students in one exam 26 72 41 59 60 88 35 48 11 84 36 73 50 61 95 70 46 56 28 74 14 91 27 22 39 77 44 87 60 45 90 63 43 88 71 29 86 70 69 55 * :b) The Median is 67 67.5 68 68.5 none of all above O
- An XYZ is hiring this school year's HRM graduate students from university ABC. The average height of the HRM students is 163 cm with a standard deviation of 5.6 cm with 100 randomly selected students. All students whose height is the tallest 15% will qualify to the first screening of hiring, determine the minimum height to qualify. 4 decimal places.Q\ For the next data: Class limit 13-19 20-26 27-33 34-40 41-47 48-54 55-61 62-68 Frequency 8 13 23 35 42 36 20 7 Calculate: 1- Arithmetic mean (X), Mode (X). 2- Standard Deviation (S), Coefficient of Variation (C,).What is the probability of drawing a BLACK card OR a card with a LETTER?
- Suppose X ~ N(6, 2). What value of x is two standard deviations to the right of the mean?Two groups of students took the same test. Group A is having a mean of 60 marks and a standard deviation of 5 markS. Group B is having a mean of 60 marks and a standard deviation of 10 marks. Which of the statements below is correct? A. Group A students have a wider spread in performance than that in group B B. Group B students have a wider spread in performance than that in group A C. Group A students have the same spread in performance than that in group B D. None of the above AAssume that IQ scores of Red Sox fans are normally distributed with the mean of 63.6 in a standard deviation of 2.5 if 90 Red Sox fans are randomly selected by the probability that they have a mean IQ score of 62.9 and 64.
