GreenBeam Limited claims that its compact fluorescent bulbs average no more than 3.63 mg of mercury. A sample of 60 bulbs shows a mean of 3.7 mg of mercury. (b) Assuming a known standard deviation of 0.22 mg, calculate the z test statistic to test the manufacturer’s claim. (Round your answer to 2 decimal places.) (d) Find the p-value. (Round intermediate calculations to 2 decimal places. Round your answer to 4 decimal places.)

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270.6…

A: Given data,μ=270.6σ=16.9P(-z<Z<z)=0.50

Q: Use the body temperatures, in degrees Fahrenheit, listed in the accompanying table. The range of the…

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268.5…

A: It is given that the length of pregnancies is normally distributed with mean 268.5 and standard…

Q: Which is the stronger level of significance, 0.01 or 0.001?   a. 0.001 This is the probability of…

A: In statistics, level of significance Is defined as the probability of making type 1 error. Type 1…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261.5…

A: Given data, Mean=261.5 sd=17.6 In what range would you expect to find the middle 68% of most…

Q: a. What is the z-score for a blood pressure reading of 140? z = 1.19 (Round to two decimal places as…

A: It is given that Mean = 121Standard deviation = 16Note: According to Bartleby expert guidelines, we…

Q: The amount of soda in a 16-ounce can is normally distributed with a mean of 16 ounces and a standard…

A: let, X= The amount of soda in a 16-ounce can Given that X follows a normal distribution with mean=…

Q: Suppose that the heights of adult women in the United States are normally distributed with a mean of…

A:

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: A sample has a mean of 5.3, a median of 5.1, a sample standard deviation of 1.2, and a sample…

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Q: In a sample of people, the mean height was  65.2  inches and the heights range from  56  to  70…

A: It is assumed that  denote the height of the person.The random variable X is given as normally…

Q: Use the body temperatures, in degrees Fahrenheit, listed in the accompanying table. the range of the…

A: Given : Range=4.1 Actual standard deviation =0.69

Q: A set of population data has a mean of 520.4 and a standard deviation of 66.9. Calculate the z-score…

A: From the provided information,Mean (µ) = 520.4Standard deviation (σ) = 66.9

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: A randam sample of 20 apartments has a mean of AED 4000 and a standard error (a/(vn)) of 1,000. You…

A:

Q: The amount of soda in a 16-ounce can is normally distributed with a mean of 16 ounces and a standard…

A: Here we have been given that, the mean of amount of soda is 16 ounces and standard deviation is…

Q: You are a correctional officer interested in whether the 45 children in your juvenile facility have…

A: Given information- Population mean, μ = 10 per year Sample size, n = 45 Sample mean, x-bar = 14 per…

Q: A researcher wishes to see if there is a difference in the manual dexterity of athletes and that of…

A: Sample mean for athletes x¯1=89 Sample mean for band members x¯2=95 Standard deviation σ=7.4 .…

Q: a. Find the mean and standard deviation. b. What percentage of the data is within 1 standard…

A: Here , A medical laboratory tested 8 samples of human blood for acidity on the pH​ scale(xi)

Q: A distribution of values is normal with a mean of 235 and a standard deviation of 14.4. Find P63,…

A:

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25

A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ

Q: The weight of newborn babies is normally distributed, with a mean of 3.7 kilograms and a standard…

A: GivenThe weight of new born babies are normally distributed.The mean =3.7 KgThe standard deviation…

Q: Suppose that the hemoglobin levels among healthy females are normally distributed with a mean of…

A: It is required to find the standard deviation of the distribution of hemoglobin levels in healthy…

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: Solution-: Given probability distribution: Let, X=The number of girls among 8 children X P(X)…

Q: Use the body​ temperatures, in degrees​ Fahrenheit, listed in the accompanying table. The range of…

A: It is given that the range of the data is 3.2 F.By the range rule of thumb, the standard deviation…

Q: A schoolteacher average concentration of 5.4 pCI/L with a standard deviation of 1 pCi/L. Calculate…

A:

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: The average number of strawberries that come in a pint is 27.9, with a standard deviation of 7.8.…

A:

Q: The population mean of happiness is 5.382, with a standard deviation of 1.138. Linda has a z score…

A: We have given that,  Let X be a random variable following normal distribution with mean (Mu) = 5.382…

Q: Suppose that the heights of adult women in the United States are normally distributed with a mean of…

A: The objective of this question is to find out the height of Rachel who is taller than 85% of the…

Q: John wishes to estimate the population standard deviation of salary of college graduates who took a…

A: From the provided information, Confidence level = 95% Margin of error (tolerance) = 1% or 0.01

Q: A random sample of men's weights have a sample mean of x¯=182.3 pounds and sample standard deviation…

A:

Q: The average number of strawberries that come in a pint is 27.9, with a standard deviation of 7.8.…

A:

Q: The coefficient of variation (CV%) is a normalized measure of the dispersion of a distribution. It…

A: given data  ∑x = 61.2∑x2 = 444.6n = 16cv% = ?

Q: The manager at UPS feels that the weights of packages shipped recently are less than in he past.…

A: Given  Population mean μ=36.7, standard deviations σ=14.2, level of significance=0.01, n=64, sample…

Q: The amount of soda in a 16-ounce can is normally distributed with a mean of 16 ounces and a standard…

A: The percentage of these cans will have less than 15.1 ounces is,

Q: Suppose that the heights of adult women in the United States are normally distributed with a mean of…

A: Solution-: Given: μ=63.5,σ=2.4 We find x value such that, P(X<x)=0.70