A normal distribution has u=10 and Q= 2  a) find the z score corresponding to x=12. b) find the z score corresponding to x = 4  c) find the raw score corresponding to z= 1.5  d) find the raw score corresponding to z= -1.2.

Q: One sample of scores has a mean of M = 45 and a sample size of n = 10 scores.  A second sample of…

A:

Q: You are considered to have an intellectual disability (ID) if you score in the lowest 2.5% of the…

A: Given data, μ=100 σ=15 P(X<x)=2.5%=0.025

Q: find the z-score that has 30.5% of the distributions area to its left.

A: From the given information, PZ<z=30.5%⇒PZ<z=0.305

Q: A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10…

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Q: The heights of women aged 20 to 29 follow approximately the (64, 2.7) distribution. Men of the same…

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Q: For a population with u = 30 and a = 4. Find the z-score that corresponds to an X value of 34.

A: From the provided information, Mean (µ) = 30 Standard deviation (σ) = 4 X~N (30, 4)

Q: The distribution of SAT scores is normally distributed with a μ = 500 and a σ = 100.  a, What…

A: Let X be a continuous random variable of the distribution of SAT scores  is normally​ distributed…

Q: The pie chart shows the distribution of the opinions of parents on whether a college education is…

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Q: Using 0.05 level of significance and assuming that the data is normally distributed: • Tell whether…

A: In testing of hypothesis there the decision is taken based on the value of the test statistic. Using…

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: Residuals are the: 1.horizontal deviations from the line of best fit to each data point…

A: Residual  = Measured value-predicted values(vertical deviation)

Q: What is the percentage of shared variance between X and Y? 49 0 10 70 000 28.8 78.5

A: It is given that the two random variables X and Y. The sum of squared deviation for X and sum of…

Q: Help me figure out what is a p-value?

A: In this case, we need to define the p-value.

Q: scores are normally distributed with μ = 100 and σ = 15. Find the IQ score separating the highest 4%…

A: normal distribution μ=100σ=15we have to find out the given IQ score:

Q: Which of the following is NOT a characteristic of a normal curve? A The total area under any normal…

A: Which of the following is not a characteristic of a normal curve :-

Q: r = 0.5, Exy = 120, Er = 90, o, = 8 where x and y are deviation from arithmetic average. Find the…

A:

Q: Calculate P, for the following data relating to the height of the plants in a garden Heights (in cm)…

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Q: Which of the following are the critical r values in the analysis (two-tailed and a = .05)? 1.6321…

A:

Q: SUM 28.8 Select the null hypothesis for the statistical test for the population Pearson's…

A: It is given that the two random variables X and Y. In a table, the sum of squared deviation of X and…

Q: During rush hour, the traffic speed on a busy highway is found to have mean 42 mph and standard…

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Q: find p (-1<z<1) refer to the table of z-scores

A: we have to find given probability...

Q: An instructor who grades “on the curve" computes the mean and standard deviation of the grades, and…

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Q: A research is conducted to investigate the prevalence of airborne bacteria in carpeted and…

A: The confidence interval formula to find out the ratio of two population variances is defined as…

Q: Susan takes a test and calculates her z-score on the test. She obtained a z-score of 1.22. Assuming…

A: Susan obtained z-score of 1.22 we have to find the percentage of individuals a test score higher…

Q: Find the​ z-score that has 72.9​% of the​ distribution's area to its right.

A: Here we have to find the​ z-score that has 72.9​% of the​ distribution's area to its right.

Q: The HEALTH resources and services. reported that 6% of people who recieved Kidny transplants were…

A: Given Information: The proportion of the people who received kidney transplants under the age of 18…

Q: A vertical line drawn through a normal distribution at z = +1.10 separates the distribution into two…

A: The value of Z ~N(0,1) , and is usually represented as, Z=X-μσ Now, using this form, a Z-table is…

Q: Waht sould we do with a large P-value?

A: The P-value is the probability we get the value of the test statistic, or something "more extreme"…

Q: e) The main benefit of an observational study is we can determine causation between two variables.…

A: For each of the given statements, we have to justify whether the statement is true or false and alse…

Q: value of the following: 1.) Р (Z <-2.06) 2.) Р (-2.81 <Z<-1.05) 3.) Р (-1.25 <Z<2.54)

A: Here we need to find three probabilities a)  P ( Z &lt; -2.06 ) by standard normal table of Z =…

Q: Tell whether there is a significant difference in the mean serum cholesterol of individual who…

A: Given information: No. of variables=5, i.e. Weight, Exercise, Systolic Pressure (before the…

Q: At a hair salon, customers arrive at the rate of 3 customers per hour. The standard deviation of the…

A: Standard Deviation: A standard deviation is a unit of measure of data spread in proportion to the…

Q: A firm produces bolts whose length x is normally distributed with a Me = 78.3 mm and a SD = 1.4mm.…

A: Given information- Population mean, µ = 78.3 mm SD = 1.4 mm Let X be the length of the bolt produces…

Q: Label the 7 points on the x-axis graph of each of the following curves that correspond to the values…

A: It is given that the z-values of 7 points and normal distribution curve with mean 0 and standard…

Q: If X = 85, Y = 54, and Y' = 62, what is the residual score? a. -8 b. 23 c. 8 d. 31

A: Solution: From the given information, Y=54 and Y’=62.

Q: (b) According to a certain survey, adults spend 2.45 hours per day watching television on a weekday.…

A: (b) Let random variable X be the adults time spent watching television on a weekday.The distribution…

Q: The regression R2 is 0,98.This means: A)Approximately 9% of the observations lie on the population…

A: R2 represent the percentage of variation in dependent variable explained by an independent variable.…

Q: A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10…

A: It is given that ∑(x-x̄)2 =28.8.∑(y-ȳ)2 =78.5 and ∑(x-x̄)(y-ȳ)=-33.2.

Q: A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10…

A: Given:

Q: For SRSWOR (N,n), find the ratio estimator of population mean. Show that the estimator is biased

A: Given information: The population size is N. The sample size is n. The sample is selected using…

Q: 32. Compute the median weight of the rabbits from the following data: Serial Number: 1 2 3 4 Weight…

A:

Q: a) µ= b) σ-

A: P65 = 14 P40= 5 z-critical value at alpha (0.65) = 0.3853 z-critical value at alpha (0.40)  =-0.2534…

Q: What is the P(t >  -1.8) with a sample size of 10.

A: Sample size : n = 10P(t&gt;-1.8) = ?

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.