At a tennis tournament a statistician keeps track of every serve.  The statistician reported that the mean serve speed of a particular player was 100 mph. and the standard deviation of the serve speeds was 9 mph.  Assume that the statistician also gave us the information that the distribution of the serve speeds was bell shaped.  What proportion of the player's serve are expected to be between 118 mph and 127 mph. Group of answer choices 0.0235 0.997 0.047 0.95

Q: oblem 6. The probability that a person reacts t h the vaccine, find the probability that: No one…

A: The probability that a person reacts to a newly manufactured vaccine against the current pandemic is…

Q: Suppose X Bin(n, π), i.e. X has a binomial distribution. Explain how, and under what conditions, X…

A: Solution-: Suppose,   X→B(n,π) Explain how and under what conditions, X could be approximated by a…

Q: fitness center is interested in finding a 90% confidence interval for the mean number of days per…

A: Givensample size(n)=243Mean(x)=2.2standard deviation(s)=2.7confidence interval = 90%

Q: Below is the frequency distribution table of the Mathematics test scores of 50 students. What…

A: Scores  Frequency 46 -50 4 41-45 8 36-40 11 31-35 9 26-30 12 21-25 6

Q: For which data set is the sample correlation coefficient r closest to 0? (Choose one) (b) For which…

A: Followings are the Explanation of the Question   Correlation :- Correlation is a defined as a…

Q: Due to the pandemic, the average price of pork jumped to Php375 per kilo with a standard deviation…

A: Given,Population standard deviation(σ)=20sample mean(x¯)=405sample size(n)=10population…

Q: III. Directions: Solve the following problems. Show your complete solution. Round off your answer…

A: n=sample size=25, sample mean x̄=30, sample standard deviations s=1.50

Q: Problem 3: If Y has a binomial distribution with parameters n and p, then p₁= is an unbiased…

A:

Q: (a) For each one of the statements below say whether the statement is true or false, explaining your…

A: For each of the given statements, we need to say whether the statement is true or false.

Q: elsewhere.

A:

Q: b) Find the variance Var(X) of X.

A:

Q: CASE 1 Registered Number of Deaths and Percent Change in the Philippines 2009-2018 Figure 1.…

A: Introduction: It is required to identify the statement that is true in the given scenario.

Q: let W = (x, y, z) be jointly discrete a random vector. Constract of W (with atleast derive 12…

A: Suppose W is a 3 - dimensional discrete random vector whose components X,Y,Z can only take values 0,…

Q: The scatter plot shows the number of hours worked and money spent on entertainment by each of 21…

A:

Q: III. Directions: Solve the following problems. Show your complete solution. Round off your answer…

A: Formula : CI=x̄ ± ME

Q: The manager of a fast-food restaurant claims that the average waiting time at their drive-through…

A: Given data is 208,193,175,195,170,167,195,180,186,172sample size(n)=10significance level(α)=5%=0.05

Q: Digitech is an Australian based indigenous-owned company. The company wishes to implement new…

A: Given data: Factors weights Logship software (manager rating) Logship software (leader rating)…

Q: If a farmer chose Technique B, what would happen? a. Possibility of a lower yield and lower risk b.…

A: Given problem Given that   If a farmer chose Technique B, what would happen ? Ans) Possibility of…

Q: A group of students is charged with dishonesty after taking the final examination. Which situation…

A: Type 1 error us defined as A type I occurs when the null hypothesis is rejected when it is actually…

Q: In a theoretical study, it was found that insomnia is associated with depression. It was also…

A: Option A is the answer.

Q: technician

A:

Q: For a certain battery company, the life span of the batteries follows a normal distribution. What…

A: Given information- Population mean, µ = 35.4 hours Population standard deviation, σ = 90 minutes =…

Q: What is ‘sampling error’? Select one: a. Forgetting to include everyone in the survey mailing list…

A: Given problem Given that   What is ‘sampling error’ ?   Ans)   Inaccuracies in our sample…

Q: Contrary to popular opinion, a psychologist claims that the mean IQ score of math instructors ... is…

A:

Q: A box containing 50 wooden balls numbered 1 through 50. If one ball is drawn at  random from the…

A: Given problem Given that   A box containing 50 wooden balls numbered 1 through 50. If one ball is…

Q: A sociologist claims the probability that a person picked at random in Times Square in New York City…

A: Let p be the proportion of people in Times Square who are visiting.  The type I error is defined as…

Q: Question Consider the exponential function modeling the data. According to the function, how many of…

A: When we want to predict the value of one variable, say y, from the given value of another variable,…

Q: A nutritionist is interested in monitoring the calorie intake of women. It was found that in a…

A: Given that  A nutritionist is interested in monitoring the calorie intake of women. Sample size (n)…

Q: 3. Problem 6. Yna likes to play cards. She draws 14 cards from a pack of 52 cards. What is the…

A: 3. The random experiments is follows hypergeometric distribution  N=52 cards k=36 cards n=14  x=4…

Q: In 2012, a teacher conducted a survey with 50 randomly selected college professors to know their…

A: Given,population standard deviation(σ)=60,000margin of…

Q: Why does z-test is being used when the sample size is large(> 30) and t-test when the sample size is…

A:

Q: The appropriate form of the test-statistics in conducting hypothesis testing about the population…

A: Assume that p as the true proportion and n is the sample size.

Q: III. Directions: Solve the following problems. Show your complete solution. Round off your answer…

A: The provided information is  µ=190  and  σ=30 The standard deviation for the sampling distribution…

Q: 1. A sample of 10 students is obtained. The students are weighed and ranked according to their…

A: Solution-: A sample of 10 students is obtained. The students are weighed and ranked according to…

Q: The number of contaminating particles on a silicon wafer prior to a certain rinsing process was…

A:

Q: A software company markets a new computer game with two experimental packaging designs. Design 1 is…

A: The question is about confidence int. for a difference between two popl. means Given : No. of stores…

Q: A standardized test of intelligence is scaled so that the mean IQ is 100, and the standard deviation…

A: Given that information  Mean = mu= 100  Standard deviation = s =15  Zscore = (x - mu)/s

Q: 3. To compare the braking distances for two types of tires, a safety engineer conducts 35 braking…

A:

Q: Two methods are used for determining ESR values of 100 persons, first is the Wintrobe method and…

A: Specificity is given by, Specificity= True Negatives/(True Negatives+False Positives) = TN/(TN+FP)…

Q: 2. It was found out that a certain manual work can be finished at an average time of 38 minutes with…

A: Given : Population Mean (μ) = 38 min Population SD (σ) = 6 min Sample size of workers (n) = 24…

Q: what is the step to number 4?

A: 4) Given that, Consider that 95% of all sample means will fall between two values. That is,

Q: Two methods are used for determining ESR values of 100 persons, first is the Wintrobe method and…

A: Sensitivity is given by, Sensitivity= True positive/(True positive+ False Negative) = TP/(TP+FN)

Q: of the claim that the population mean is greater than 89 sec, what does df denote, and what is its…

A:

Q: The top 5 students of grade 10 section Oxygen class, James, Jessie, Jane, John, and Jack, are so…

A: The top 5 students of grade 10 section Oxygen class, James, Jessie, Jane, John, and Jack, are so…

Q: The score in a second game can be represented by the discrete random variable Y with mean 100 and…

A: The random variables X and Y are independent.   E( X - Y ) = E(X) - E(Y)   Var( X - Y ) = Var(X) +…

Q: (f) The random variable X has the following probability density function: (3x + 3)(x+3)/16 for 00.75…

A: Find  P(X>0.75|X>0.5)=? Cov(X+3,(X+3)-1)=?

Q: Problem 4: Suppose Y is a single observation from an exponential distribution with mean 6. Show…

A: Solution

Q: From a sample with n=40​, the mean duration of a​ geyser's eruptions is 3.13 minutes and the…

A: Solution-: Given: μ=3.13, σ=0.82, n=40, (Lower, Upper)=(1.49,4.77) We want to find  at least how…

Q: For a certain battery company, the life span of the batteries follows a normal distribution. What…

A: Here's, mean is 35.4 hours and standard deviation is 90 minutes or 1.5 hour. We will use z-standard…

Q: Two neurologists examined 55 magnetic resonance imagings (MRIs) for evidence of brain tumors. As…

A: Given Information: No. of observations=55Positive (both) (a)=20Negative (both) (b)=15First negative,…