The Z scores of two tests scores are + 1.2 and + 1.5. To obtain the area between these scores       find the area between each score and the mean in the Z score table and then subtract the smaller area from the larger area       find the area beyond each score in the Z score table and subtract the difference between the areas from the mean   find the area between each score and the mean in the Z score table and then subtract the difference between them from 100%   subtract the Z scores and find the area of the difference in the Z score table

Q: Help with 4

A: Given points are in an non- linear line. The given points denote as variable sample size chart of x-…

Q: Suppose X ~ N (-2,3). Between what c values does 99.73% of the data lie?

A: The mean is -2 and the standard deviation is 3.

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: Imagine a soldier in a trench during an armed conflict. In the enemy camp, inside another trench, is…

A: P(sniper) = 0.001 P(regular) = 0.999 P(hit |sniper) = 0.87 P(hit | regular) = 0.18

Q: by

A: Let X be the random variable such that the scores in the Statistics exam. The average score was 80…

Q: se technology to calculate the P-value P-value = (Round to three decimal places as needed.)

A: Given that  Sample size n1=1120 , n2=1048 Sample proportion p1^=0.47 , p2^=0.46

Q: Find the probability that the mean of a month’s reviews will take Yoonie from 3.5 to 4.25 hrs.…

A: It is given that μ = 4σ = 1.2n = 16

Q: What is the z-value and area if score is 70 ?

A: The score is 70

Q: What is the percentage of scores that lie between a z score of -2 and a z score of 1?

A:

Q: what is the difference of fractile and quantile

A: Difference between fractile and quantile:

Q: The heights of a group of men averaged 69 inches and followed the normal curve. The 91st percentile…

A: Solution: Let X be the height of group of men. μ= 69 inches  Average height of men.  The 91st…

Q: When the size of samples gets larger, the standard error of the sample means…

A: Solution Since sample size (n) is inversely proportional to standard error, The standard error…

Q: 5.

A: Given:

Q: Find the​ z-score that has 93.82​% of the​ distribution's area to its left.

A: given probability is P(Z<z0)=0.9382

Q: A sample of psychology students in MSU-IIT was part of a study that examined their happiness level…

A:

Q: figure to the nght, hich shows the percentages of adults from several countries who favor building…

A: The survey included the random sample 1125 adults from country A, 1003 adults from country B, 1019…

Q: Describe the t test for 2 independent samples.

A: In order to assess whether there is statistical evidence that the related populationmeans are…

Q: Describe about the negatively skewed shape of histogram.

A: The histogram is said to be left-skewed or negatively skewed when the histogram has a long-left…

Q: ate Kobe was 6'6" (or 78 inches).  Suppose the average height of men is 5'9" (or 69") and SD is 3".…

A:

Q: whats negative skew?

A:

Q: Find the z-score which separates an area of 0.9000 on the right, from the remaining area on the…

A: According to the given information, we have P-value = 0.9000 Right tailed

Q: The mean of normal distribution probably is 400 pound and SD is 10 pound what is the area 415 pound…

A: In this context, the mean of normal distribution probably is 400 pound and SD is 10 pound. Here, we…

Q: The pathogen Phytophthora capsici causes bell peppers to wilt and die. Because bell peppers are an…

A: (i) We have done the calculations for the sample means and standard deviations using an fx-82MS…

Q: Z score of 0.045

A:

Q: a certain brand produces box with weight of 100 gr.the average weight of 20 samples equals to 102…

A: From the provided information, Sample size (n) = 20 Sample mean (x̅) = 102 Population standard…

Q: Let p, represent the population proportion for Country C and p2 represent the population proportion…

A: Given that Sample sizes  for country C and country D n1=1024 , n2= 1078 Level of significance =alpha…

Q: dentify the claim and state Ho and H. The claim is "the proportion of adults in Country C who favor…

A: Given that  Sample sizes for Country C and D n1=1024 , n2= 1078 Level of significance =alpha = 0.09

Q: A distribution of English exam scores has u = 70 and o = 4. A distribution of history exam scores…

A:

Q: The data in the table is the number of absences for 7 students and their corresponding grade.…

A: The data table provided in the question is as follows :- Number of absences Grade 0 5.5 1 5…

Q: The variance is sometimes a negative number.

A:

Q: e, negative, or no correlation. 3.

A: A positive correlation is a relationship between two variables in which both variables move in the…

Q: please show the work for the problems with an explanation versus just shwoing calculated data.

A: To check the relationship b/w age and miles on the car.

Q: O E Ho: P1 P2 D D. Ho: P1 2 P2 H: P <P2 H, P, SP2 H P, 2P2 ind the standardized test statistic. z=…

A: Given that  Sample sizes n1=1120 , n2=1048 Sample proportion p1^ =0.47 , p2^=0.46

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.