In a normal distribution, x = 5, z = -1.25. This tells you (right or left) of the mean. a. b. O A. left O B. right that x = 5 is standard deviations to the

Q: distribution of the sample mean whern Normal with mean p and variance o. Normal with mean o and…

A: The sampling distribution of a statistic is known as the the probability distribution of all the…

Q: Scores for students on the verbal portion of the SAT-I test are normally distributed with a mean of…

A: Denote X as the Sat-I test score. It is given that X is normally distributed, with mean μ = 509 and…

Q: The average amount of money spent for lunch per person in the college cafeteria is $6.2 and the…

A: Here, 43 samples are collected. b.) Hence, if the sample mean is denoted by x, then, x~N(μ,σ2n),…

Q: 6. For the graph at the right, put the mean for each distributions A, B and C in order smallest to…

A: The graph shown in the picture is Bell shaped Symmetrical Unimodal which are the properties of…

Q: *The data show the number of patients in a sample of ten hospitals who acquired an infection while…

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Q: A student's grade on an examination was transformed to a z value of 2. Assuming a normal…

A: Students's score is transformed to z value. Z = 2Normal distributionshe scored in top how much…

Q: Find the z-score for the value 82, when the mean is 98 and the standard deviation is 3. OA. 2= -567…

A: From the provided information, Mean (µ) = 98 Standard deviation (σ) = 3 X~N (98, 3)

Q: OA. 1.63 O B. 1.45 OC. -1.63 O D. none of these is correct

A: mean μ =94standard deviation σ = 16we know thatz = x - μ /σ

Q: The table on the right gives the annual income for eight families, in thousands of dollars. Find the…

A: Solution-: We have the annual income of 8 families in thousand of dollars. Family A B C D E F G…

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking Suppose…

A: According to the given information in this question, we need to answer part c

Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…

A: Given that mean =70,s.d =2.5 p( x>72) =?

Q: The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the…

A: The complete table is, Frequency(f) Midpoint(x) xf 2 70.5 141 13 92.5 1,202.5 24 114.5…

Q: Cures had a Mean of 82 and a Standard Deviation of 5 6. Find a z score for x =81 and x = 68 Z- score…

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Q: What information can you get from a person’s z-score? a. Whether they are above or below the mean b.…

A: Solution

Q: Given the figure above is a normal curve, with a mean score of 100 and a standard deviation of 15, a…

A: Given that ; Mean (μ) = 100 ? = 15  The given curve follows standard normal distribution by using…

Q: The distribution of heights of adult men is approximately normal with a mean of 69 inches and a…

A: Mean = 69  Standard deviation = 2  Z-score = -0.5

Q: Below represents the amounts that a random sample of employees reported that they spent on dinner…

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Q: Let x=70 be an element in a distribution with mean 65 and standard deviation 5. Which ones of the…

A: A normal distribution is a continuous distribution which has many real life applications. A standard…

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

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Q: The duration of gestation in healthy humans is approximately normally distributed with a mean of 280…

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Q: The times that college students spend studying per week have a distribution skewed to the left with…

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Q: entrance examinations are normally distributed with a mean of 75 and a standard deviation of 10.…

A: X~N( μ , ?)   μ=75 , ?=10   Z-score =( x - μ )/?

Q: 3. The amount dispensed by the coffee machine follow the normal distribution with a mean of 5,286…

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Q: Jessica is working on some statistics for her employer.  She finds that the variance of the data she…

A: The variance of the data Person J is analysing is 81.

Q: weight of filled bags [g] an automatic filling. 56 158 154 133 141 130 144 137 51 146 156 138 138…

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Q: If n = 20 andp = 0.90, then the standard deviation of the binomial distribution is a. 1.34 b. 2.34…

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Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

A: The provided information is as follows:The total number of samples is .The data is given as…

Q: The following are the number of cars passing a point on a highway per minute.   10 12 11 19 21…

A: Solution-: Given data: 10 12 11 19 21 21 23 22 24 25 23 21 28 26 62…

Q: elp!!

A: Given: μ=185σ=39

Q: Which of the following could be the standard deviation of a data set with a median of 10 and a range…

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Q: The empirical rule relates the standard deviation of a population to the probability of where a data…

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Q: standard deviation is s = 30. Determine the test statistic for this test.

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Q: The middle 95% of a group of 1000 students got scores ranging from 50 to 90 on a math test. If the…

A: Normal Distribution: Understand the properties of the normal distribution, including the mean (μ)…

Q: A large group of students took a physics test and the final grades have a mean of 70 with a standard…

A: The random variable X follows normal distribution. We have to find the percent of students scored 70…

Q: a. In a normal distribution, a = - (right or left) of the mean. b. -2, z = 6. This tells you that x…

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Q: On average, indoor cats live to 12 years old with a standard deviation of 2.4 years. Suppose that…

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Q: Assume that adults have IQ scores that are nomally distributed with a mean of u= 100 and a standard…

A: It is given that the mean is 100 and standard deviation is 15.

Q: The table below gives the annual income for eight families, in thousands of dollars. Find the number…

A: Given : Family A B C D E F G H Income 51 53 52 50 49 50 47 48

Q: One graph in the figure represents a normal distribution with mean u=7 and standard deviation o= 1.…

A: From the given graph as follows: It can be seen that Graph A has mean 7 and Graph B has mean 12.

Q: 11. Consider the data described in Problem 10. If 15 participants are sampled, what is the…

A: Given : μ = 85 , σ= 12 and n= 15         By Central Limit Theorem, x̅ follows a Normal…