According tố thể the area under the normal distribution, proximately what percent of the data should lie within u ± ?20

Q: hen creating a 99% CI based on data from one sample the size of n=31, which t value should be used?

A: Given: n=31 The degree of freedom=n-1=31-1=30 The level of significance (α)=0.01 We see inside the…

Q: Find the raw score which corresponds to z=1.6?

A:

Q: Answer D,E,F only. Thank you.

A: Box plot was used to measure the outlier in the data set. It is the graph that contain quartile…

Q: Suppose the lengths of human pregnancies are normally distributed with u = 266 days and 0 = 16 days.…

A: The objective of the question is to interpret the meaning of the area under the normal distribution…

Q: A normal distribution has a mean of u = 18 with o= 4. Find score (X) needed to be in the bottom 29%…

A:

Q: Find the​ z-scores for which 75 ​%of the​ distribution's area lies between -z and z.   the z-score…

A: Obtain the value of Z-score for which 75​% of the​ distribution's area lies between -z and z.   The…

Q: he amount of trash generated by US households (in lbs per day) is Normally distributed. You a random…

A: given datanormal distribution n=8DF= n-1=8-1=7x¯=10.00 LBSs=5   LBSCI=0.90α=1-0.90=0.10

Q: The following numbers are the number found at the left side and upper part of the table. Identify…

A: 1) P-1.6≤Z≤0.09=PZ≤0.09-PZ≤-1.6                           =PZ≤0.09-PZ>1.6…

Q: Find the​ z-scores for which 82​% of the​ distribution's area lies between −z and z.

A: Solution: a. Let

Q: Ex8: Assume that the current measurements in a strip of wire follow a normal distribution with a…

A: Assume that the current measurements in a strip of wire follow a normal distribution.

Q: What percentage of the variation in  can be explained by the corresponding variations in  and  taken…

A: X1 is the dependent variable  X2 and X3 are the independent variables.

Q: Find the​ z-scores for which 88​% of the​ distribution's area lies between −z and z.

A: The z-scores for 88% of the​ distribution's area lies between, 1-α=0.88α=0.12α2=0.061-α2=0.94 The…

Q: The mean arterial pressure (or MAP, average arterial pressure in one cardiac cycle) is a measure for…

A: From the given information, x¯=1.6sx=0.5y¯=80.1sy=16.9r=0.8 n=50 Consider, the regression equation…

Q: The correlation between a cereal's fiber and potassium contents is r=0.909. What fraction of the…

A: Correlation coefficient(r)=0.909

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: Find two z - values, one positive and one negative, that are equidistant from the mean so that the…

A: The areas in the two tails total 34%. The two z values are, Pz1<Z<z2=0.34 For,…

Q: Find the z-scores for which 50% of the distribution's area lies between -z and z.

A: Excel function to find inverse of standard normal distribution is as follows : =NORMSINV(…

Q: The z score length of a carrot is 1.5, what is the length of this carrot?  what percentage of…

A: We have to find  the percentage of carrots....

Q: Determine the area under the standard normal curve that lies between a. −2.18 and 1.44. b. 1.1 and…

A: The area under the standard normal curve has Bell shaped curve. To find the area under the standard…

Q: Suppose the lengths of human pregnancies are normally distributed with p = 266 days and o = 16 days.…

A:

Q: The diameter X in inches of a certain brand of tennis balls has normal distribution with mean μ =…

A: Given:  X ~ N(μ = 2.65,  σ 2= .0182)   Part a: Since acceptable balls have diameters between 2.62…

Q: A population with a mean of μ = 8 has SX = 40. How many scores are in the population?

A: It is given that, the population mean is µ = 6 and ΣX = 40.

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: In a normal distribution, the mean is equal to 60 and the standard deviation equal to 7. Find the…

A: The provided information are: Population meanμ=60Population standard deviationσ=7

Q: First, look up the equation for the normal curve. Now, using this equation, calculate the area under…

A: We have to find the area under the curve for a z score between 0 and 1 i.e we have to find P(  0…

Q: Find the Z score for which 80% of the distributions area lies between -z and z

A: Solution: From the given information, the area lies between –z and z is 0.80.

Q: Suppose the lengths of human pregnancies are normally distributed with u=266 days and o 16 days.…

A: Mean, Standard deviation, The area to the right of X = 300 is 0.0168.

Q: 1. from z=0 to z = 2.07 2. from z= 1.03 to z = 2.18 3. from z=-2.33 to z = 3.03

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Find two z values, one positive and one negative, that are equidistant (the same distance away) from…

A: Z1=+1.645≈+1.65

Q: . Adult men Stride length (meters) 2.5 3.0 3.3 3.5 3.8 4.0 4.2 4.5 Speed (meters per second) 3.4 4.9…

A: We have given that,  The data set is,  Stride length (X) :- 2.5, 3.0, 3.3, 3.5, 3.8, 4.0, 4.2, 4.5…

Q: What proportion of the data has values between 330 and 345?

A: It is given that  Mean, μ = 345 Standard deviation, σ = 30 Z-Score, z = ( X - μ )/σ

Q: The length of a 13-year-old female's upper arm is approximately normally distributed with mean μ =…

A: From given : μ=34.6σ=2.4

Q: Find the area under the normal curve of the following in percent: 7. for z = 1.34 or z -1.11 9. for…

A: Using the standard normal table we get:P(z<1.34)=0.9099P(x>-1.11)=0.8665