Use the probability distribution for the random variable x to answer the question. Find p(4). 0 1 2 3 4 5 p(x) 0.2 0.25 0.3 0.1 ? 0.05 X

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

A: Mean = 100, Standard deviation = 15.P(X > x) = 0.3694

Q: Construct a  90%  confidence interval for the mean number of letter sounds identified in one minute.…

A: It is given that Sample mean = 34.09Sample std. deviation = 23.44Sample size = 141Confidence level =…

Q: (a)Find the probability that the selected bulb can survive for at least 3 years. (b)Find the…

A: Given,there are 5 types of bulbs.the lifetime of a bulb of type n follows an exponential…

Q: A space agency compiles data on​ space-shuttle launches and publishes them on its website. The…

A: Note: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so I am…

Q: Suppose we choose arbitrarily a point from the square with corners at (2,1), (3,1), (2,2), and…

A: A point is chosen arbitrarily from the square with corners at (2,1),(3,1),(2,2),and (3,2).The random…

Q: The average number of field mice per acre in a 7-acre wheat field is estimated to be 14. (a) Find…

A: Let X represent the number of field mice found. The estimated value is 14.

Q: A candy maker surveyed chocolate bars available in a local supermarket and found the least squares…

A: The given least squares regression model is .

Q: Is there a significant difference between the STEM students and ABM students in terms of their…

A: After entering the data as given in Excel: Go to Data>Data Analysis>Descriptive…

Q: Suppose that you gather more data and use ordinary least squares (OLS) to estimate the linear…

A: The question is about regression.Introduction :Suppose,  is a least square regression…

Q: 8.11

A: n=134X=18

Q: Shania's favorite Starburst is the pink flavor. Shania purchased a container of '318 Starbursts and…

A: It is given that the 4 original falvours are orange, pink, yellow and red.

Q: For a 4-units class like Statistics, students should spend average of 12 hours studying for the…

A: The empirical rule is defined below as follows: Empirical ruleThe Empirical rule for any normal…

Q: Given the first type of plot indicated in each pair, which of the second plots could not always be…

A: The question involves pairs of plots, with one type of plot indicated in each pair. The task is to…

Q: Isabel recently switched her primary doctor to one specializing in caring for elderly patients. On…

A: sample size(n)=13Mean()=123standard deviation(s)=21significance level()=0.05

Q: You may need to use the appropriate appendix table or technology to answer this question To test…

A: I used Minitab for calculations. After entering the data as given, in Minitab, go…

Q: Find the constant c so that f (x) is a pdf of some random variable X, and then find the cdf, F (x) =…

A: Givenwe find the constant  such that  is a pdf of some random variable we need to ensure that the…

Q: Determine whether you can use a normal distribution to approximate the binomia distribution. If you…

A: The provided information is as follows:The total number of students is .The probability of the…

Q: df= (Type a whole number.) x2=(Round to three decimal places as needed.) X=(Round to three decimal…

A: It is given that n = 20s = 0.23Confidence level = 80%

Q: What is the expectation of X?

A: An urn holds 4 red, 3 blue, and 2 green marbles.Three marbles are selected, altogether, without…

Q: A spinning wheel has 10 different dollar amounts on it ($1, $2, etc. up through $10). There is a .10…

A: Number of different dollar amounts on the spinning wheel = 10probability of landing on any one of…

Q: any Aplia problems use the following Distributions tool. You can use this tool to retrieve the…

A: Let Z be the standard normal variable.The mean and standard deviation are 0 and 1, respectively.

Q: A certain test is designed to measure the satisfaction of an individual with his/her relationship.…

A: Mean()=50Standard deviation()=10

Q: The city of Raleigh has 11000 registered voters. There are two candidates for city council in an…

A: The question is about proportion.Given :Total no. of registered voters in a city ( N ) =…

Q: 53- The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known…

A: n = 15, p = 0.4Note: According to bartelbyquestion answer guidelines an expert can solve only one…

Q: Round the answers to one decimal place.   A  95%  confidence interval for the true mean length of…

A: n=42,x¯=129.2,s=13.9C.I = 95% = 0.95

Q: Three hundred participants were asked to think of colors and write them down. After a 15 minute…

A: The hypothesis test is used for testing a claim which helps in making important business decisions.

Q: d) If you hadn't already taken the sample listed above, what sample size would be required so that…

A: p=Xn=31200=0.155C.I=99%=0.99α=1−C.I=1−0.99=0.01

Q: Using the unit normal table, find the proportion under the standard normal curve that lies between…

A: The standard normal distribution is given.Want to calculate probabilities?The Z table P( Z < z)…

Q: Each year, marketing and information firm J.D. Power and Associates surveys new car owners 90 days…

A: The mean number of defects for 2 models of cars A and B are compared. A random sample of size n=100…

Q: f (x) = 4xc for 0 ≤ x ≤ 1 ; Find the constant c so that f (x) is a pdf of some random variable X,…

A:

Q: 7) A group of 39 randomly selected students have a mean score of 19.5 with a standard deviation of…

A: Given:

Q: A survey of 100 businesses revealed that the mean after-tax profit was $80,000 and the standard…

A: We have given thatsample size (n) = 100sample mean () = 80000Standard deviations () =…

Q: involving 52 students selected from a large private university. Each of the factors was run at two…

A: Anova tableSVSSdfMSFPower0.281Knowledge 1.261Interaction 1Error 3.1448Total4.7651.

Q: mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and…

A: n=99​, x=3.84​, s=0.55. Use a 0.05

Q: ber of customers who enter a supermarket each hour is normally distributed with a mean of 640 and a…

A: Suppose that the number of customers who enter a supermarket each hour is normally distributed with…

Q: The table below lists measured amounts of redshift and the distances (billions of light-years) to…

A: We have given a data  redshift (X)distance…

Q: For a standard normal distribution, determine the following probabilities. a) P(Z > 1.38) b) P(Z >…

A: a)P(z>1.38)

Q: Find the mean square footage

A: We have given that data Frequency distribution table. Mean = sum of all observations/total number of…

Q: Suppose that the speeds of cars travelling on California freeways are normally distributed with a…

A: From the provided information,AndLet X represent the speeds of cars travelling on California…

Q: Tonys Restaurant is a company that manufactures two types of cooking pans. The forecasted amount of…

A: Pan 1Pan 2Forecast of demand 5537038000Processing time 0.10.08Average lot size100100Setup time21.5

Q: What is the probability that more than 6 find their jobs stressful?

A: In a poll conducted by the General Social Survey, 81% of respondents said their jobs were sometimes…

Q: account payable requests. On any given day, 30% of the emails are Financial Analysis receives 93…

A: Financial analysis = 30% = 0.30Evaluation request = 50% = 0.50Account payable = 1 - 0.30 - 0.50 =…

Q: Show work if possible

A: Yes we show that the how many possible distinct arrrangements for the word 'Mississippi', by using…

Q: On average, a textbook author makes 1 word-processing error per page on the first draft of her…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Match these values of r with the accompanying scatterplots: 1, -0.355, -0.718, 0.355, and 0.996.…

A: The given correlations are 1, -0.355, -0.718, 0.355, and 0.996

Q: 9. For a ten-year select-and-ultimate table, you are given: (a) (b) Calculate [30]. √60 9 l[30]+t =…

A: Given for a ten-year select-and-ultimate table:(a) (b)

Q: A survey provided the following data for 2015 students. Age Group ( 23 and under 24-26 27-30 31-35…

A: The given survey data is:Applied to more than one schoolYesNoAge group23 and…

Q: From a sample of 50 monthly returns of a stock, you have determined a sample mean of 0.36% and…

A: Sample size(n)=50sample mean()=0.36%Standard deviation()=0.2%

Q: Suppose that men's mean heartrate is 78.3 beats per minute (bpm), and women's mean heartrate is 73.9…

A: Given:men's mean heartrate =78.3women's mean heartrate=73.9standard deviation for both =4.7  and…

Q: A two-way ANOVA experiment with no interaction is conducted. Factor A has four levels (columns) and…

A: Given information: Factor A has (columns ) c= 4 levels Factor B has (rows)  r=8 levels SST= 367.5…