Find out some merits and demerits of seasonal variation? Find out some merits and demerits of cyclical variation? Find out some merits and demerits of irregular variation?

Q: The time to complete an exam is approximately Normal with a mean of 43 minutes and a standard…

A: Given,mean(μ)=43standard deviation(σ)=5

Q: If we roll two standard dice, what is the probability of rolling a sum of 10? Write your final…

A: GivenTwo standard dice are rolled

Q: Determine the values of the following quantities. (Round your answers to two decimal places.)…

A:

Q: Valtec Electronics fills orders for its electronic components and parts by truck to customers…

A: Hint: The control limits for the X-Chart and R-Chart are: UCLX=X¯+A2R, CL=X, LCLX=X¯-A2R UCLR=D4R,…

Q: The worldwide market share for a web browser was 20.4% in a recent month. Suppose that a sample of…

A: Given that  X = 25 , N = 100 , P0 = 0.204, alpha = 0.05 Using proportional Z test statistic

Q: Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 0 2…

A: we know that,mean(μ)=E(X)=∑X.P(X)E(X2)=∑X2.P(X)Variance(σ2)=E(X2)-(E(X))2standard…

Q: Find the interval μ = ²√³ μ+Z within which 95 percent of the sample means would be expected to fall,…

A: Given For 95% confidence interval z=1.96

Q: 16. Question: Brenda wants to estimate the percentage of people who eat fast food at least once per…

A: As per the Bartleby guildlines we have to solve first question and rest can be reposted... Given…

Q: of male 11.36 Sampling male students, continued. students on your campus, you will measure an SRS of…

A:

Q: In northern Europe, there are two species of flycatcher: the collared flycatcher and the pied…

A: Given:

Q: The owner of Showtime Movie Theaters, Inc., would like to predict weekly gross revenue as a function…

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

Q: 6) Are A and B mutually exclusive? Explain 7) Events A and B are mutually exclusive. P(A) =0.11,…

A: 6b) From the given information, P(A)=0.3, P(B)=0.35 and P(A or B)=0.62.

Q: Suppose that a certain car has the following average operating and ownership costs. Average Costs…

A:

Q: keg P(A) = 0.57, P(B) = = 0.38 and P(AandB) = 0.05. Find P(BIA) In a large school, it was found that…

A: 2) It is given that, P(A) = 0.57, P(B) = 0.38 and P(A and B) = 0.05.

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A: Given Mean=0.938 gram Standard deviations=0.328 gram

Q: Quick Start Company makes 12-volt car batteries. After many years of product testing, the company…

A: given data normal distributionμ = 45.8σ = 6.7

Q: Interpreting z-scores: Complete the following statements using your knowledge about z-scores. d.…

A: Here we have to Interpret z-scores: for the the following statements   If the data is annual salary…

Q: We use the results of our first step to calculate a test-statistic. Why is this important and how…

A: Null hypothesis: According to Prof. R.A.Fisher, null hypothesis is the hypothesis and is tested for…

Q: A diagnostic test for a certain disease is applied to n individuals known to not have the disease.…

A: We have given that Let X = the number among the n test results that are positive p = probability…

Q: O. 0₁6660 = 0.5734 P(Aor B)= 0.57 10) Suppose now that events A and B are independent events with…

A: It is given that the events A and B are independent. P( B ) = 0.27 P( A/B ) = 0.26

Q: Assume that when adults with smartphones are randomly​ selected, 56​% use them in meetings or…

A: Binomial distribution describes the possible number of events occurs in fixed number of trials.…

Q: Let our experiment consist of rolling two four-sided dice. So our sample space S consists of 16…

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

Q: The probability that a certain type of sea turtle hatching survives until adulthood is assumed to be…

A: Given that: Number of hatchlings incubate in a certain nesting area, N=980 Probability that a…

Q: Use Appendix Table A.3 to answer the following. A publisher has discovered that the numbers of words…

A: Given that: Population mean, μ=20000+w Population standard deviation, σ=10000 *w is the number of…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.6…

A: Let X be the random variable from normal distribution with mean (μ) = 2.6 and standard deviation (σ)…

Q: Suppose that you have eight cards. Five are green and three are yellow. The cards are well shuffled.…

A: given data  5 green cards  3 yellow cards  ________________ 8 total cards draw 2 cards at random one…

Q: data that heights of young men are approximately Normal with standard deviation about 2.8 inches.…

A:

Q: use ) If a specimen is acceptable only if its hardness is between 67 and 75, what is the probability…

A: It is given that  Mean, μ = 70 Standard deviation, σ = 3

Q: Find the data set's first, second, and third quartiles. Draw a box-and-whisker plot that represents…

A: Given Arranging Observations in the ascending order, We get :…

Q: Both data sets have a mean of 175. One has a standard deviation of 16, and the other has a standard…

A: The stem-and-leaf plots are given and the one has a standard deviation of 16 and other has a…

Q: Suppose body mass index (BMI) varies approximately to the normal distribution in a population of…

A: Given,Mean(μ)=17.8standard deviation(σ)=1.9

Q: Thirty-five rose bushes are available from a nursery containing 16 red bushes, 11 yellow bushes, and…

A: It is given that thirty-five bushes are available in which 16 red bushes, 11 yellow bushes, and 8…

Q: 31 36 39 35 31 32 24 27 28 28 30 31 . What is the value of the Test Statistic? -. What is the…

A: Given data: Temperature 1 Temperature 2 Temperature 3 31 31 28 36 32 28 39 24 30 35 27 31…

Q: Sean flipped a coin 100 times and got heads 42 times. He concludes that the probability of g heads…

A: Sean flipped a coin 100 times and got heads 42 times. He concludes that the probability of getting…

Q: 12. Meaning of the Dow The Dow Jones Industrial Average (DJIA) is a commonly used index of the…

A: From the provided information, Mean (µ) = 13.59 Standard deviation (σ) = 94.05

Q: We obtain the following demand curve of beef in a market with 25 observations: Q = 635.736 - 48.165…

A: Given that  The standard error of the slope coefficient is 2.546 Sample size n =25

Q: Will upvote if show solutions in EXCEL. At one percent level of significance, are the given heights…

A: The question is about hypo. testing Given : Level of signif. ( α ) = 0.01   To find : Test whether…

Q: Two cards are selected from a standard deck of 52 playing cards. The first card is not replaced…

A:

Q: s. Find the confidence interval of the population mean with a 95% confidence level.

A: Here given ,  Suppose heights, in inches of orangutans are normally distributed and have a known…

Q: How do you calculate ophat? 0% b/f P(1-P) 12 OP(1-P) √n Ophat-(1-phat) √n phat-(1-phat) TL

A:

Q: With respect to an independent-samples t test, all of following statements are true, execpt: a. An…

A: Introduction: We need to identify which of the statements regarding the independent-samples t-test…

Q: The letters A, B, and C are marked on the histogram. Describe the shape of the data. Then determine…

A: The histogram shows the number of sick days used by employees.

Q: Part D?

A: The total number of observations (n) is 20.

Q: The effect size of a study helps determine if the statistical significance is a genuine treatment…

A: The effect size of a study helps determine if the statistical significance is a genuine treatment…

Q: It will take exactly four seconds to verify the debit card. ): In how much time would you expect the…

A: Given Number of lanes used initially=1 Arrival rate=750 per hour Service rate =1 car in 4 second

Q: There are 12 players on a basketball team. The coach is going to choose 5 of them for the starting…

A: From the provided information, There are 12 players on a basketball team. The coach is going to…

Q: Let u denote the true average reaction time to a certain stimulus. For a z test of Ho: = 5 versus…

A:

Q: The following estimated regression equation based on 10 observations was presented. ŷ = 26.1270…

A:

Q: Thirty percent of all telephones of a certain type are submitted for service while under warranty.…

A: Givenpercentage of telephones are submitted for service =30%percentage of telephones can replaced…

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated. The…

A: Given  75, 61, 75, 61, 60, 75, 70 and 65 Sample =8 Population standard deviation=5