The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.7 days and a standard deviation of 2.1 days. What is the 80th percentile for recovery times? (Round your answer to two decimal places.)

Q: Describe a distribution of scores that has a mean of M 5 30 and a standard deviation of SD 5 6.…

A: From the given information we describe the distribution.

Q: e whether each statement is true or false and briefly explain your answer  You have a sample of 100…

A: It is given that we have a sample of 100 observations from a Normal distribution with an unknown…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: A random sample of 411 high school students was selected in order to compare the heights, in…

A: Hi there! Thanks for posting the question. Since there are multiple subparts we will solve first…

Q: At a local coffee shop, wait times for a cup of plain coffee are normally distributed with a mean of…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: collected data on the cost of computers at best buy shows that 95% of the prices are between what…

A: The two values of cost of computers at best buy in which about 95% of the prices are is obtained as…

Q: c. What is the Z-score for a giraffe that is 21 foot tall? d. What is the probability that a…

A: Dear Student,  As per the guidelines, I can solve only the first 3 subparts. Kindly repost the…

Q: Suppose you have a normal distribution with a mean of 10 and a standard deviation of 2.…

A: According to the given information, we have Given that the normal distribution with a mean of 10 and…

Q: Lauren is interested in determining if the children in her preschool lie more than the population.…

A: The mean of the population is given and the sample mean and sample standard deviation are given for…

Q: A consumer survey indicates that the average household spends μ = $185 on groceries each week. The…

A: From the provided information, Mean (µ) = $185 Standard deviation (σ) = $25 Let X be a random…

Q: The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A…

A: Given data is 72,68,81,93,56,19,78,94,83,84,77,69,85,97,75,71,86,47,66,27sample size(n)=20sample…

Q: Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united…

A:

Q: When finding the percentage of data in a given section of the normal curve, you are finding the…

A: here use basic of normal distribution

Q: Find the proportion of Normally distributed observations with a z-score below 2.56. Give your answer…

A: Given Z=2.56

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A:

Q: What proportion of the scores in a normal distribution falls below z= -1.32?

A: Let X ~ N(0,1). Then, P(X<-1.32)=P(X>1.32)  [ As X is symmetric about…

Q: Find the proportion of Normally distributed observations with a z-score below 0.02. Give your answer…

A: Solution-: We want to find, (a) The proportion of Normally distributed observations with a z-score…

Q: A normal distribution of scores has a mean of 72 and a standard deviation of 11.  Find the z-scores…

A: Problem 1:Given:μ = mean = 72σ = standard deviation = 11 We can solve for z-scores using this…

Q: Suppose that you are an elementary school teacher and you are evaluating the reading levels of your…

A: Solution

Q: Expenditures per shopper at Upscale Clothing have a mean of $130 and a standard deviation of $40 and…

A: Given Information:Mean = $130Standard deviation = $40

Q: A distribution of values is normal with a mean of 204.2 and a standard deviation of 39.2. Find P84,…

A: Given: A distribution of value is normal with mean of 204.2 A standard deviation of 39.2 It is…

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: According to Empirical rule (68-95-99.7 rule) Given that the middle 68% of the scores fall…

Q: This variable should be tested for Normality?   A. Predictor B. Outcome

A: Dependent variable and independent variable: The variable of interest, regarding which, the…

Q: Identify the​ t-statistic and P-value.

A: The sample size n is 23.

Q: Among freshmen at a certain university, scores on the Math SAT followed the normal curve, with an…

A: We have given that, Population mean (μ) = 550 and  standard deviation (σ) = 100 Then,  We will find…

Q: Which average is affected most by extreme values Oa. Median O b. Arithmetic Mean OC. Mode Od.…

A: Median is the middle-most value of the sorted data. Removing extreme values does not affect much the…

Q: IQ is normally distributed with a mean of 100 (SD = 15). What score would a person need to be in the…

A: Let X denote the IQ scores and it follows normal distribution with mean of 100 and standard…

Q: elp!!

A: Given: μ=185σ=39

Q: b) If three bags are selected at random, find the probability that 2 bags weigh more than 55 kg. c)…

A: We want to find the probability

Q: Identify the type of data that would be used to describe a response. Number of Mt. SAC students…

A: Qualitative variables/Categorical variables:   The variable that describes about the characteristic…

Q: The mean of the population is 50. The standard deviation is 10. If a person row score is 47 (a)…

A: The mean of the population is 50. The standard deviation is 10. If a person row score is 47 (a)…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A:

Q: Find the area of the shaded region. The graph depicts the standard normal distribution of bone…

A:

Q: The annual income for a sample of 450 part-time students is normally distributed with a mean income…

A: Given that: Population mean, μ=31000 Population standard deviation, σ=3000 Sample size, n=450

Q: Find the proportion of Normally distributed observations with a zz-score above -2.84. Give your…

A: Given the proportion of Normally distributed observations with a z-score above -2.84

Q: The middle 50% of the heights are between what two values? Round to one decimal place.

A: Here Given, Assume that women have heights that are normally distributed with a mean of 63.6 inches…

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: < Area Under a Normal Distribution Bin... THE SCORES OF A SCIENCE TEST HAD AN AVERAGE OF 78 AND A…

A: GivenMean=78standard deviation(σ)=3

Q: Identify the data value corresponding to the indicated percentile. The amount of sleep an adult gets…

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

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: