x2-P(x) Standard davlat P(x) X P(x) 3 0.15 6. 0.35 8. 0.40 010

Q: Prothrombin time (PT) is a blood test that measures the time (in seconds) it takes for blood plasma…

A:

Q: Scores on a Literature test have an average of 80 with a standard deviation of 6. What is the…

A: Solution: Let X be the score on a Literature test. From given information, X has mean µ=80 and a…

Q: Use the formula to find the standard error of the distribution of differences in sample means,…

A:

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1025 h with a…

A: Mean = 1025 Standard deviation = 85 Raw score = 950

Q: A survey collected data from a random sample of 121 people living in Jade city. The sample average…

A: It is given that the sample mean is 23.28.Using the given information, the standard error of the…

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

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: neigi a an of б9.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 79.5…

A: It is given that the mean is 69.0 and the standard deviation is 2.8.

Q: A basketball player has a scoring average of 0.325 each week of the season, with a standard…

A: Given: μ=0.325σ=0.065

Q: to calculate the standard error of the mean what will you need

A: Consider a random variable X, has mean µ and the standard deviation of σ.

Q: Use the formula to find the standard error of the distribution of differences in sample means,…

A: The answer is attached below,

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: The amount of time spouses shop for anniversary cards can be modeled by an exponential distribution…

A: Let X is the amount of time ( in minutes ) that a randomly selected spouse spends shopping for an…

Q: If X ~B(190,0.34), find mean and variance of x. (Rounded in 3dp.)

A: X ~B(190,0.34) Given a Binomial Distribution X ~B(n,p) Here, n = 190 , p = 0.34

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Define empirical rule first .  Empirical Rule :  The empirical rule, also referred to as the…

Q: Scores on a history test have a get age of 55 with standard deviation of 10. What is the z-score for…

A: GivenMean(μ)=55standard deviation(σ)=10student earned score on test(x)=95

Q: Describe about the Error Variability?

A: The element of variability is produced by factors, such as measurement imprecision, and is not…

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 h with a…

A: Given :- A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 70…

A: We are reauthorized to answer three sub parts at a time, since you have not mentioned which part you…

Q: A positive aspect of obesity surgeries is that many people get rid of their type 2 diabetes. A…

A: We know that Standard error S.E=  σ/√n       then Standard deviation σ = S.E*√n   95% confidence…

Q: The distance advanced in a day by a tunnel boring machine, in meters, is uniformly distributed on…

A: From the provided information,The distance advanced in a day by a tunnel boring machine, in meters,…

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: The human population has a mean IQ score of µ = 100 and a standard deviation of σ = 15. Find the…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: It is given that Mean of test scores = 1537 And SD = 315

Q: The United Nations stores statistics about all the live births in the United States. The latest data…

A:

Q: Mean 2, x is 5 and z score is 4 find standard deviation

A: Given ,mean(μ)=2Z-score=4and X=5

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30.…

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

Q: Find the standard deviation of the following values: 2.58x10-5, 2.33x10-5, 3.28x10-5, 3.57x10-5

A:

Q: Assume that the average time for train journeys between London and Brighton is 157 minutes with a…

A:

Q: How I can calculate the standard deviations of each of the two differentassets?

A: Standard deviation is the positive square root of the mean of the squares of the deviations of the…

Q: t the residents of a local town reported sleeping an average of a=7.97 hours each night with a…

A: Given : sample mean= x̅ = 7.766 population mean=μ = 7.97

Q: How does the slightly different perspective make the standard deviation even more accessible?

A: Standard deviation: It is a measure of how far each observed value is from the mean and standard…

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 h with a…

A: Given, Mean life span of 1026 h and standard deviation 86 h.

Q: what is the Mean Absolute Deviation? What is it's purpose?

A: Deviation in statistical term defined as a single (or) more number of data values deviated from the…

Q: The standard deviation never been negative because it represents the Speed O Distance O Time Average…

A: We have to find why standard deviation can never be negative.

Q: A random sample of 22 fifth graders pupils have a grade point average of 5.0 in math with a standard…

A: Note: Hey there! Thank you for the question. As you have posted a question with multiple sub-parts,…