Testing: H0:μ=24.19H0:μ=24.19 H1:μ≠24.19H1:μ≠24.19 Your sample consists of 25 subjects, with a mean of 22.7 and a sample standard deviation (s) of 4.22. Calculate the test statistic, rounded to 2 decimal places. t=

Q: Find the IQ Score.  IQ score  0.3446 Distributed with a mean of 100 and a standard deviation of 15.…

A: Given DataMean = 100Standard deviation = 15Probability of IQ score of adults = 0.3446

Q: 2. According size in the United States is normally distributed with a mean µ = 2392 square feet and…

A:

Q: Determine the weight of the students before and during the quarantine. Did the students lose more…

A: H0:μ1=μ2H1:μ1<μ2

Q: The mean of a normal disiribution is 50 and standard deviation is 12.5. Calculate the 60th, 65th and…

A: Given,mean(μ)=50standard deviation(σ)=12.5

Q: The amount of trash generated by US households (in lbs per day) is normally distributed. You take a…

A:

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: Q1. Erythrocytes were examined by light microscopy and found to have the following diameter: 4.7,…

A: Mean is the measure of central tendency. It is calculated by adding all the values and divide it by…

Q: You measure the height of 10 people and come up with an average of 70 inches and a standard…

A: x=70s=4n=10 The t scores for 68 inches, t=68-xsn=68-70410=-1.581139

Q: Testing: H0:μ=5.46 H1:μ≠5.46 Your sample consists of 43 subjects, with a mean of 5.4 and standard…

A: Given : H0 : μ = 5.46H1 : μ ≠ 5.46 n = 43  x¯ = 5.4s = 1.08 t = x¯ - μsn   t = 5.4 - 5.461.0843 t =…

Q: Scores on an English exam are normally distributed with a mean of 78.6 and a standard deviation of…

A: From the given information, The random variable X is scores on an English exam The mean is 78.6 The…

Q: A normal population has mean u=56 and Standard deviation o=8. What is the 85th the population?…

A: We have given that  Mean, μ = 56 Standard deviation, σ = 8

Q: The mean speed of a sample of vehicles along a stretch of highway is 65 miles per​ hour, with a…

A: Empirical rule (68 – 95 – 99.7 rule): For a bell shaped distribution (normal) the empirical rule…

Q: Ho:µ = 16.435 H1:µ + 16.435 Your sample consists of 31 subjects, with a mean of 15.5. You were given…

A: given   sample size n= 31  , sample mean = 15.5   ,  standard deviation = 2.73

Q: H=34, o=4.5, the score is 2.5 standard deviations above the mean

A: Suppose the variable of interest is x.The mean is and the standard deviation is .

Q: Tom attends a fashion institute that has no on campus housing. The mean distance commuted to campus…

A: Mean=mu=16 Standard deviation=sigma=7 X=22

Q: Find ACT quintiles. ACT scores are reported on a scale from 1 to 36.  The distribution of ACT scores…

A: Let X be the ACT scores reported on a scale from 1 to 36 Given that X follows normal distribution…

Q: Calculate the sample standard deviation, s, for this set of data: 6.3, 6.7, 6.3, 3.6, 8.8, 5.0…

A: Given information: The data is given below. 6.3, 6.7, 6.3, 3.6, 8.8, 5.0 Sample size (n)=6   Find:…

Q: The mean composite score for seniors who took the SAT in 2010 was 1068. If the standard deviation…

A: From the provided information, Mean (µ) = 1068 Standard deviation (σ) = 100

Q: Smelt is a type of flood fish. Smelt lengths are normally distributed with a mean of 15 cm and a…

A: Given: µ = 15 σ = 1

Q: A hospital in a large city records the weight of every infant born at the hospital. The distribution…

A: Solution

Q: A survey of 16 entergy drinks noted the caffeine concentration of each drink in milligrams per…

A: Mean: For a set of n observations, x1, x2, ... , xn mean is given by, Standard deviation: For a set…

Q: Exercise B: The sample uric acid levels of selected basketball and tennis players of the same age…

A: The sample uric acid levels of selected basketball and tennis players of the same age and gender in…

Q: Calculate z scores from two samples "he tallest living man at one time had a height of 252 cm. The…

A: Given data,Mean is μ=170.25sd is     σ=8.47

Q: SAT tests have a mean of 500 and a standard deviation of 100. They are normally distributed. Amy got…

A: Given data normally distributed with mean = 500 and standard deviation = 100.Let ‘X’ be a normal…

Q: Calculate the z-score for the largest value and interpret it in terms of standard deviations. Do the…

A: It is given that mean is 28.766, standard deviation is 3.369, the largest value is 35.100 andthe…

Q: The amount of trash generated by US households (in lbs per day) is normally distributed. You take a…

A: Sample mean = x̅ = 10.91 Sample size = n = 10 Sample S.D = s = 4.736 Standard Error = s/√n  =…

Q: We considered the differences between the temperature readings in January 1 of 1968 and 2008 at 51…

A:

Q: You perform a one-sample t test and calculate a t statistic of 3.0. The mean of your sample was 1.3…

A:

Q: ical Rule. The mean speed of a sample of vehicles along a ercent of vehicles whose speeds are…

A: mean = 64 standard deviation = 4 to find P(56<X<72)

Q: Maple tree diameters in a forest area are normally distributed with mean 10 inches and standard…

A:

Q: otal cholesterol in children aged 10 to 15 years of age is assume to follow a normal distribution…

A:

Q: The distribution of heights in a population of women is approximately normal. Sixteen percent of the…

A: given data  normal distribution empirical rule: approximately 68 -95 -99.7% data fall within 1σ…

Q: Testing: Ho: = 40.26 H: µ + 40.26 Your sample consists of 29 subjects, with a mean of 42.1. and a…

A: For n<30, we use the small sample test for a single mean. This test is also known as Student's…

Q: A population of adults males heights distributed as approximately normal with mean 69 inches and a…

A:

Q: The highway mileage (in mpg) for a sample of 6 different models of a car company can be found below.…

A: The data provided in the question are as follows : xi   20 22 26 27 30 31

Q: A farm hatches chicken eggs in batches of 15 and there is a 3% infertile rate. Find the standard…

A: Obtain the standard deviation for the number of infertile eggs per batch.   The standard deviation…

Q: find the mean and standard deviation for A B C Sample a: 12. 21.30 Sample b: 70, 79,88 Sample…

A: Given information- We have given 3 samples. Sample a, sample b, sample c. We have to find the mean…