The mean score on a set of 26 tests is 88. Suppose two more students take the test and score 63 and 56. What is the new mean? The new mean is (Round to the nearest tenth.)

Q: Water Consumption The Old Farmer's Almanac stated that the average consumption of water per person…

A: Introduction: Denote μ as the current true average consumption of water per person per day.

Q: Given the data set below, determine class Interval PII P78 19-21 22-24 25-27 28-30 31-33 Frequency…

A: Given data set:

Q: Two cards are drawn without replacement from a well-shuffled standard 52-card deck of  playing…

A: From the provided information, Total cards in standard deck = 52 Number of face cards = 12 Total Ace…

Q: mean of 148.4 mg. (a) State the hypotheses for a two-tailed test of the claimed potassium content.…

A: Given mean=mu=149, standard deviations σ=148.4, Sample mean x̄=148.4, level of significance ɑ=0.01…

Q: The number of degrees of freedom for the appropriate chi-square distribution in a goodness of fit…

A: Solution: To find the degrees of freedom for the chi-square distribution in goodness of fit test.

Q: Question 6 < Central Limit Theorem for Proportions When you take samples from a population and…

A:

Q: Use the normal distribution below for the prices of a high end HD television to answer the question.…

A: as we know empirical rule:  approximately 68 -95 -99.7% data fall within 1σ-2σ-3σ of μ.

Q: Complete parts (a) and (b). a. If three students scored 75 on a test and three other students scored…

A: The mean is the average of the dataset which is obtained by dividing the sum of all items present in…

Q: The weights of a certain dog breed are approximately normally distributed with a mean of 51 pounds,…

A: The mean is 51 pounds and standard deviation is 6.1 pounds.

Q: One year Terry had the lowest ERA (earned-run average, mean number of runs yielded per nine innings…

A:

Q: a. Complete the table for the Standard Normal Distribution. Region Area (-∞, - 3] 0.0013 0.13% (-3,…

A:

Q: Question 8 Find the area of the shaded region under the standard normal distribution to the left of…

A: given data standard normal distribution μ=0σ=1P(z&lt;-0.07)=?

Q: What is the​ least-squares regression line with the point (9,13) included in the data​ set?   Data…

A: Given information: x y x^2 y^2 xy 3 6 9 36 18 4 5 16 25 20 5 7 25 49 35 6 4 36 16 24 7…

Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

A:

Q: A client’s orders are growing consistently at x% per year.     A) If three years from now orders…

A: It is related to compound interest : A=P(1+ r/100)n   A = amount after n years  P= principal amount…

Q: The 87th percentile is (Round to two decimal places as needed.)

A: It is given that  Mean, μ = 50 Standard deviation, σ = 7

Q: If Cov (WFC, WFC)=0.0064, WHAT IS THE Var (WFC) ?

A: Given that Cov (WFC, WFC)=0.0064, WHAT IS THE Var (WFC) ?

Q: You want to make a confidence interval for the true average number of users of the video server at…

A: Note: There are two intervals for finding the confidence interval for true population mean: t…

Q: Hedging can also be considered the act of transforming a risky portfolio/asset into a risk-free…

A: Hedging:  It means , which eliminates all risk in portfolio known as Hedging .

Q: In the mining industry coal is transported from the mine to the plant using hopper rail cars. The…

A: given data normal distributionμ = 74σ = 0.48

Q: Suppose the probability of winning a blackjack hand is .48. What is the probability that the first…

A:

Q: Standardized tests for certain subjects, given to high school students, are scored on a scale of 1…

A: Given Score 1 2 3 4 5 Probability 0.18 0.20 0.26 0.21 0.15

Q: How can the empirical rule be restated in terms of z-scores and percentiles? Restate it for four out…

A:

Q: 3) Suppose in MSU, 12 out of 200 students are covid positive. If 300 students are selected for COVID…

A: 12 out of 200 students are covid positive p(covid positive)=12200=0.06here p=0.06q=1-0.06=0.94 n=300…

Q: A normal random variable X has an unknown mean and standard deviation. The probability that X…

A:

Q: Suppose the probability of winning a blackjack hand is .48. What is the probability that the first…

A: Given that Suppose the probability of winning a blackjack hand is 0.48  Then we have to find the…

Q: A boat capsized and sank in a lake. Based on an assumption of a mean weight of 150​lb, the boat was…

A: Given The data is as follows: Population mean, μ=178.3 Population standard deviation, σ=39.7

Q: i. ii. iii. Calculate the value of *? State the null and alternative hypotheses for the test. What…

A: It is given that the data of one-sample z test.     Note: According to Bartleby expert guidelines,…

Q: Data was collected for a sample of organic snacks. The amount of sugar (in mg) in each snack is…

A: from given histogram we have to find sample size.

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: given data  normal distribution μ = 59σ = 4 P(59&lt;x&lt;71) = ?

Q: Carbohydrates in Fast Foods The number of carbohydrates found in a random sample of fast-food…

A: Data given 30, 38, 39, 40, 41, 43, 44, 46, 47, 51, 53, 61, 62, 63, 73 n=15 Note: According to…

Q: (a) 9 percent level of significance, two-tailed test. Critical value of z (b) 7 percent level of…

A: It is given that the hypothesis test at different significance levels. Here, need to find out the…

Q: What

A:

Q: wing compressive strengths (in psi). 3223      3329      3269      3244      3258      3325…

A: Given that data  3223      3329      3269      3244      3258      3325      3204      3296…

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: The question is about normal dist. Givem : Popl. mean weight of pilots ( μ ) = 157 lb Popl. std.…

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A:

Q: A manufacturer claims that the average tensile strength of thread A exceeds the average tensile…

A: Given information: X¯A=86.7sA=6.28nA=50X¯B=77.8sB=5.61nB=50 Claim: The average tensile strength of…

Q: 1) Soda consumption is very common in the U.S. For the purposes of this question, assume that 30% of…

A: Solution: From the given information,

Q: default (not repay). The bank currently has 250 loans outstanding. (a) In order to use a binomial…

A:

Q: In a study, the sample is chosen by using the random number generator on your TI-83 to generate a…

A: It is given that the statement about to the sampling method. Here, need to find out the correct…

Q: The manager of the Public Broadcasting System for Tennessee is considering changing from the…

A: The following information has been provided: The standard deviations are: s1=2.50s2=1.34 The sample…

Q: Find the market price of a chair, if Shalini paid Rs 3430 after discount of 2%?

A: Given discount = 2% Selling price = Rs. 3430

Q: Suppose the probability of winning a blackjack hand is .48. What is the probability that the first…

A: given data  P(win blackjack)  = p = 0.48 ∴q = 1-p = 0.52 P(first hand win on third attempt)  = ?  =

Q: 2) Suppose in MSU, 52 out of 400 students live in campus housing. If we select 14 students at…

A: 2) It is given that 52 out of 400 students live in campus housing.

Q: Consider the multiple regression model with three independent explanatory variables under the…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.5…

A: Let random variable X be the lifespan of items The random variable X follows Normal distribution…

Q: OBFW Publishers Suppose that Jason recently landed job offers at two companies. Company A reports an…

A:

Q: Based on a sample of n = 28, the least-squares method was used to develop the prediction line ₁ = 8…

A:

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: given data μ=200σ=9normal distribution P(200&lt;x&lt;225)=?

Q: 4.13 The linear regression model is y = B₁ + B₂x + e. Let y be the sample mean of the y-values and…

A: