The grade of OMG 321 was normally distributed with a mean of 81 and a standard deviation of 3. (round z value to the second decimal and probability to the fourth decimal place) a) What is the probability that a student got a B- or above (grade > 80) in this class? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt

Q: What is the probability that a first grade classroom of 20 students who are chosen randomly from the…

A: Given Information: Mean μ=100 Standard deviation σ=15 Sample size n=20

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A: Mean=μ=3Standard.deviation=σ=1.8Samplesize=n=30

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Q: ii, 20 coins are flipped each with a probability of 0.5 that it will be heads. What is the standard…

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A: Harmonic mean: it is defined as the reciprocal of the mean of reciprocals. HM=n∑1X

Q: When do we use frequency distribution?

A: We need to use the concept of frequency distribution to answer question.

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A: GivenElsa's last post on word-e was 233Mean(μ)=289standard deviation(σ)=45Isabel's last post on…

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A: Define the random variables, Xi : Amount of time spent in streaming site. i=1,2,3,...,65 Given, µ=…

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A: Given: Sample size n = 15 Significance level α = 0.10 Formula Used: Test-statistic t = d-μdsdn…

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A: Given: μ=1518, σ=325 The corresponding z-value needed to be computed is: If 1 SAT score is randomly…

Q: There were 5 members of a basketball team, who had a mean score of 12 points each per game. One of…

A: Given n=5, Xbar=12, n=4, Xbarreduced=10

Q: How to create a frequency distribution?

A: Frequency of each class is obtained by counting the number of times each data point appeared in each…

Q: the scores from the MCAT exam are normally distributed with a mean of 500.5 and standard deviation…

A: Given that: Population mean, μ=500.5 Population standard deviation, σ=10.5

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A: Given information Sample mean x̅ = 1905 pounds Population mean µ = 1900 pounds Sample size n = 90…

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Q: The mean always has a z-score (value) →

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Q: does the range and standard deviation remain unchanged because the addition of 7 is a constant so…

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Q: d the probability that a score is from 185 to 210. d the probability that a score is from 160 to…

A: As per your request I have solve only (d) option Given Mean =201 Standard deviations=21

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Q: Describe one-tailed p-values.

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A: The mean is 150 and standard deviation is 30.

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A: The IQ scores are Medium lead level High lead level 72 n2=11 x2=91.088 s2=10.092 97 92…

Q: Determine the probability of seeing a Z score of -5.28 or one with a larger absolute value.

A: Z = -5.28 P( Z > -5.28) = 1 – P(Z < -5.28) = 1 – 0 = 1 P(Z < -5.28) = 0 (From Excel…

Q: Explain how descriptive and inferential statistics is different and what they consist of. Provide an…

A: Statistic It is a quantity obtained from sample

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A: given data,normal distribution μ=5σ=3probability that person will wait more than 9 minutes =?

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Q: ONLY SOLVE C The speed at which people type is measured in terms of words per minute (wpm). The WPM…

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Q: Edit question fast please. The lengths of Atlantic Croaker Fish are normally distributed with mean…

A: Here's mean is 10 and standard deviation is 2. We will use z-standard normal distribution.

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A: The following information has been provided: x¯1=85s1=4.7n1=11x¯2=79s2=6.1n2=17 It is assumed that…

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Q: A California lake has been stocked with rainbow trout. These trout have an average length of 24…

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Q: Ali scores 70 on Calculus-1 course with a class mean of 68 and a standard deviation of 2, and he…

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