A factory produces bars of chocolate that follow a Normal Distribution with a mean weight of 60g and a standard deviation of 2g Find the probability that a bar weighs more than 58g. Give your answer correct to 3 d.p.

Q: Test the claim that the mean GPA of night students is significantly different than 2.5 at the 0.05…

A: Given that

Q: Sixty-three percent of U.S. households have a personal computer. In a random sample of 400…

A: From the provided information, 63% of US households have a personal computer that is p = 0.63 Sample…

Q: a random sample of 63, the proportion of the sample with a certain characteristic was 0.61. What is…

A:

Q: An article that appeared in the British Medical Journal (2010) presented the results of a randomized…

A: Given data :

Q: Problem 2. A marketing company wants to determine if a new product will sell better on the east…

A:

Q: lustration 17.20. It is known that the weight of a group of 10,000 persons is distributed normally.…

A:

Q: A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to…

A:

Q: The net weight of a can of salmon is a random variable with a mean of 6.07 ounces and a standard…

A:

Q: Refer to the following ANOVA table and find the missing values. (Give your answers correct to two…

A: Given that  Source df SS MS F Factor 4       Error   38     Total 25 162.8

Q: Suppose a polling agency reported that 47.3% of registered voters were in favor of raising income…

A: We have given that  best point estimate of proportion p^ = 47.3% = 0.473 Sample size n = 1001 Margin…

Q: A certain vending company's soft-drink dispensing machines are supposed to serve 6 oz of beverage.…

A: There are 5 independent samples which are A, B, C, D and E. We have to test whether there is a…

Q: From the data given below construct a business activity index number both weighted and unweighted.

A:

Q: A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to…

A:

Q: Sixteen percent of all sports cars are painted red. Given a random sample of 250 sports cars, find…

A: Given that  n=250 , p=16%=0.16 , q=1-p=1-0.16=0.84

Q: When a result is not extreme enough to reject the null hypothesis, explain why it is wrong to…

A: Given a statement regarding the null hypothesis.  We have to explain the statement.

Q: Consider the following actual demand and forecast data for ARX AG a national distributor of…

A:

Q: Convert the trend equation, Yc forward the origin by half a month, given that the trend origin is…

A:

Q: Based on this information, which one of the following statements is correct?                If a…

A: We have given that  Claim: The true population proportion of adults who favour the colour purple is…

Q: Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing…

A: Obtain the coefficient of variation for value of X. The coefficient of variation for value of X is…

Q: 22) Suppose a platform tries to recommend the best movie to Ann and Ben. Movie l's quality is…

A: Result  If X~U(a,b)  E(X)=expected value=(a+b)/2  In above question given  Movie 2 follow U(0.5,1)

Q: A researcher claims that the average wind speed in a certain city is 8 miles per hour. A sample of…

A:

Q: A random sample of 52 measurements was selected from a population with σ=3.6. The sample mean was…

A:

Q: STEP 1. H0: µ o   H1: µ o         NOTE: For ≠ enter /=   STEP 2. This test is (e) left-tailed, (f)…

A: Given that  x̄ = 54 ,  μ = 56 , ? = 5.6 , n=37 Note: According to bartleby experts question answers…

Q: Given the trend equation, Yc Y unit = 240-1.8X, where X unit = 6 months and annual production.…

A:

Q: The owner of Showtime Movie Theaters, Inc., used multiple regression analysis to predict gross…

A:

Q: how many water specimens are required in the sample?

A: It is given that Margin of error E = 0.8 Population SD = 5.9 Level of confidence = 95% The critical…

Q: appreciated

A: sample size (n) = 9 sample mean (x̄) = Σx/n = 423/9 = 47  sample standard deviation (s) = √ Σ…

Q: When does the chi-square distribution approximate the normal distribution? df > 30 df > 90…

A: When does the chi-square distribution approximate the normal distribution? select the correct…

Q: How many percent of adult rabbits are under 28cm in length?

A: An adult rabbit's average length is 30cm, with a standard deviation of 4cm.  x= adult rabbit's…

Q: A local DMV (location of your choice) wanted to assess the number of mistakes that were made by its…

A:

Q: r answer). 4) One corollary of the Central Limit Theorem is that for a sufficiently large sample…

A: We have given that the statement about to the Central limit theorem is that for a sufficiently large…

Q: (5) Let us now consider a simple, symmetric random walk starting at 0 (which at each step goes up or…

A:

Q: A single card is drawn from each of two decks of 52 cards. What is the probability of getting a…

A: Obtain the probability of getting a heart from the first deck and then a diamond from the second…

Q: Shift the trend origin from 1996 to 1998 in the following trend equation : Yc = 20 (1.5)X Given that…

A:

Q: A sample of 149 was found to have a standard deviation of 6.9. An interval estimate for μ based on…

A: Given that  n=149 , S=6.9  C.I=(25.93275 , 28.58725)

Q: 2. Approximately 34% of the area under the normal curve of a normal distribution with a mean of 50…

A:

Q: Find the P-value for the indicated hypothesis test. Round all proportions and standard scores to two…

A: The hypothesized proportion is 0.08.

Q: A key characteristic of the chi-square distribution is it   is always skewed   is used with only…

A: Followings are the explanation of the question  Depends directly on the degrees of freedom   The…

Q: v. Given that Sharon can only procure the list of barangays and nothing else, what is the most apt…

A: Given information: No Barangay 1 Alion 2 Baseco 3 Biaan 4 Cabcaben 5 Camaya 6 Ipag…

Q: The test statistics is

A: We have given that  Sample mean = 3.12 Sample standard deviation = 0.59 Sample size = 9 α = 0.01 H0:…

Q: Among all the income tax forms filed in a certain year, the mean tax paid was $2000 and the standard…

A: The random variable tax follows normal distribution. We have to find the probability that the…

Q: (b) What is the probability of obtaining x= 105 or more individuals with the characteristic? That…

A: Given that  Sample size n =125 Population proportion p=0.8

Q: We make decisions every day. In making decision, we usually follow certain processes and then make…

A: In a survey dean of university claim that estimates that the mean number of classroom hours per week…

Q: State the research hypothesis and null hypothesis       Would the researchers use a one- or…

A: From the above data we are given that  A researcher wants to know whether people who regularly…

Q: A. What is the value of the test statistic for a test with a null hypothesis that mu = 83, Xbar =…

A: Given (A) mu = 83, Xbar = 85, the sample standard deviation = 2  and n = 49 (B)  mu = 98.6, Xbar =…

Q: he test statistic of z 1.00 is obtained when testing the claim that p>0.5. Identify the hypothesis…

A:

Q: _____ is used to test the differences in the mean value of a dependent variable among different…

A: Given that

Q: In the book Business Research Methods (5th ed.), Donald R. Cooper and C. William Emory discuss a…

A: Chi-square test is a nonparametric inferential statistic.

Q: A researcher was doing a study for a new Coronavirus Drug and conducted a hypothesis test like this…

A: Given that Population mean μ =18 Test statistic =0.75 P-value =0.4648

Q: investment portfolio? Let x be a random variable representing annual percent return for the Vanguard…

A: Given that  x: 11 0 37 25 32 27 28 –11 –11 –25y: 8 –3 27 14 26 17 14 –3 –4 –8 Find the value Sum of…