Since she scored standard deviations v the mean in economics and standard deviations V the mean in mathematics, she did better on the exam (Round to two decimal places as needed.)

Q: After entering the test scores from her Statistics class of 25 students, the instructor calculated…

A: IQR is obtained as the difference between the third and first quartiles.

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

A: It is given that Mean = 40 Standard deviation SD = 4 Score X = 38

Q: I need help finding the g average and standard deviation. Then answering number 1 - is the accepted…

A: Given Information: Consider the given fitted data: Trial A gexp=|2A| 1a -7.03E+00 14.07 1b…

Q: A score that is 9 points above the mean corresponds to a z score of +1. What is the population…

A: As given: A score is 9 points above the mean.  It corresponds to a z score of +1.  It is required…

Q: Find the z-score for the value 69, when the mean is 96 snd the standard deviation is 5. z-score= ?

A:

Q: Renee scores an average of 153 points in a game of bowling and her points in a game of bowling are…

A:

Q: what will be the value of X at the z score =-2.5 given, mean=45 and standard deviation =5?

A: Mean = 45 Standard deviation = 5  Z score =-2.5 We have to find X score  for given data...

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: The scores on a test are normally distributed with a mean of 70 and a standard deviation of 14, find…

A:

Q: I need help on subpart b - the standard deviation for stock x

A: Given Information: Stock X P(X) -60 0.1 20 0.2 110 0.4 170 0.3 Required: To compute…

Q: The results of a common standardized test used in psychology research is designed so that the…

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Q: When we compute a standard deviation, we are trying to get a measure of the average distance of…

A: Let us understand better by assuming X1, X2, ...., Xn be n data points. Then,…

Q: What is the Z score of an individual with a height of 183cm if the mean of the population is 170cm…

A: Given that mean = 170 SD = 6.1 And the height of individual X = 183

Q: The scores on a standardized test are approximately normal with a mean of 83 and a standard…

A: Let T be minimum score needed to be in top 8%

Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

Q: What is another name for the standard deviation of the variable x? What is the reason for that name?

A:

Q: of driver's education students is 68 points, with a standard deviation of 4 points. Apply…

A: Given

Q: The mean difference equals 1.2, the standard deviation of the difference equals 1.5, and n equals…

A: It is given that mean difference is 1.2, the standard deviation of the difference is 1.5 and the…

Q: The standard deviation is now (Round to three decimal places as needed.)

A:

Q: On a recent calculus exam, a class mean was 75 with a standard deviation of 3.4. Calculate the…

A: From the provided information, Mean (µ) = 75 Standard deviation (σ) = 3.4 Let X be a random variable…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122…

A: Given data,Mean μ=122sd σ=16

Q: The average temperature in a town in January is 22.1 oF and the standard deviation is 7.5 pF. What…

A: we have to find average temperature  in Celsius  from given data. given data : mean = 22.1.of…

Q: Tanya takes her Physics test and is told that her Z-score is 3.10. If the class mean was 75 and the…

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: The mean score of the students on pre-assessments is 10 and the standard deviation is 2. What was…

A:

Q: the average height of grade 10 students is 148 cm. a sample of 250 students had an average heigh of…

A:

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118…

A: Note: Please repost d subpart as i can answer only 3 subparts as per my policy. Given data,…

Q: What is the deviation?

A: Deviation is Difference between the Given observed value and One fixed Value...

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: Given data mean=69.0 inches standard deviation=2.8 inches x=79.7 inches

Q: The lengths of metal bolts are normally distributed with mean μ cm and standard deviation 7 cm. If…

A: Let X be the random variable from normal distribution with mean μ and standard deviation (σ) = 2.5…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 119…

A: Given data,μ=119σ=16P(X≥160)=?

Q: How I can calculate the standard deviations of each of the two differentassets?

A: Standard deviation is the positive square root of the mean of the squares of the deviations of the…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121…

A: X follows a Normal distribution with mean = 121 and S.D = 19 Then z=(x-mean)/SD = (x-121)/19…

Q: My Physics professor announced that top 18% will get A in the class.               Class mean is 72,…

A: Let X= score of a student  Given that X follows a normal distribution with mean=72 and standard…

Q: Do men take less time than women to get out of bed in the morning? The 42 men observed averaged 7.6…

A: Given : Men  Sample size = nm = 42 Mean = xm = 7.6 Standard deviation = sm = 2.2 Women  Sample size…

Q: what is the Mean Absolute Deviation? What is it's purpose?

A: Deviation in statistical term defined as a single (or) more number of data values deviated from the…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 119…

A: The mean of the blood pressure is 119. The standard deviation of the blood pressure is 23.

Q: Jack had an average score of 75 with a standard deviation of 3. Mikes z-score was 1.85. His actual…

A: We have given that,  X be the random variable from normal distribution with mean Or average score…

Q: The scores on a psychology exam were normally distributed with a mean of 64 and a standard deviation…

A:

Q: The average weight of a group of students is 68 kg with a standard deviation of 8 kg. If the z-score…

A: Givenmean(μ)=68standard deviation(σ)=8z-score=0.5

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122…

A: Given that, The systolic blood pressure of adults in the USA is nearly normally distributed with a…

Q: On a recent calculus exam, a class mean was 69 with a standard deviation of 2.4. Calculate the…

A:

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121…

A: Here the systolic blood pressure of US adults is normally distributed with mean=121 and SD=21. Also…

Q: Based from the record, the mean weight of the newborn babies is 4.8 lbs with a standard deviation of…

A:

Q: The average score on the Stats midterm was 79 points with a standard deviation of 4 points, and…

A:

Q: My spouse, on the other hand is 77" tall. The mean height for men is 70", and the standard deviation…

A:

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118…

A: The parameter {\displaystyle \mu } is the mean  or expectation  of the distribution (and also its…

Q: The mear was 80 and the Standard deviation was 4, Kawhi scored 5, 8o his z-Score was more than one…

A:

Q: On an exam with a standard deviation of σ = 6, Tom’s score of X = 54 corresponds to a z-score of z =…

A:

Q: What are all the values that standard deviation "s" can possibly take?

A: Standard deviation S=x1;x2n-1and ,Standard deviation is the positive squarew root of the variance…