percentage of high school students study more than 64 minutes per night?

Q: Given the following pair of scores in x and y. compute and interpret r. Use formula 1, 2, 3, and 4.…

A: For the given data Fons r =? and interpret

Q: The hypothesis test ?0:?≤74 ?1:?>74 is to be carried out for a population where ?σ is known to be…

A: The random variable X follows normal distribution. We have to find the sample size by using given…

Q: ns with the same mean. Do the amounts of arseni ve the highest mean, can we conclude that brown k…

A: Given, Arkansas  California  Texas 4.84 1.45 5.55 4.87 3.7 5.81 5.02 3.96 6.62 5.41 4.47…

Q: Compute Var(y3) for the following model, where ɛ ~ wn(0, 0.01), i.e., a white noise process with…

A: From the given information, yt=1+0.5yt-1+εt, y0=1 If t=1, yt=1+0.5yt-1+εty1=1+0.5y0+ε1…

Q: This graph represents the results of the study. On the basis of the graph, what could you say about…

A: Here Given the  Comparison of performance of TBI and NON TBI Group relative to the age matched…

Q: 3. MAKE A NEWTON'S DIVIDED DIFFERENCE TABLE TO (a) FIND FOR THE FUNCTION f,(x) THAT WILL SATISFY THE…

A: We need to make a Newton's divided difference table  to find: (a)  the function f(x) (b)  f(4) and…

Q: (a) State the null hypothesis H, and the alternative hypothesis H,. 1' Ho :0 H, :0 OP (b) Determine…

A: The provided information is n1=15, n2=7x¯1=182,   x¯2=181s1=8,  s2=6α=0.05a.The null and alternative…

Q: A poll of 2625 U.S. adults found that 1240 U.S. adults, or 47.238% regularly used Facebook as a news…

A: Solution: Given information: n= 2625 Sample size  p^= 0.47238 Sample proportion

Q: Suppose 190 geology students measure the mass of an ore sample. Due to human error and limitations…

A: Mean(µ) = 85Standard deviations (σ) = 1X ~ N (µ, σ )= N(85, 1)

Q: а) What is the prevalence of each of the two communities?

A: here use basic formula of Prevalence  Prevalence  = no of people with disease Total Population

Q: Length Area 37 53 30 45 25 30 25 39 43 60 31 49 43 60 38 57 What is the lower…

A: Regression line are used to predict the future variable. Prediction interval are used to predict the…

Q: Find the mean, median, and mode for the following data set: 28 -31 28 0 31 31 -23 Find the mean,…

A: As per bartleby guideline expert have to answer first question only dear student please upload other…

Q: Which among the groups is most dispersed? Support your answer.

A: here use given mean and standard deviation

Q: 200 lottery tickets are sold for $4 each.  The person with the single winning ticket will get $90.…

A:

Q: 1- In order to determine the proportion of defects in a shipment, 40 parts from it are randomly…

A: The objective is to identify the sampling method for the given scenario.

Q: 9.2 An electrical firm manufactures light bulbs that have a length of life that is approximately…

A:

Q: It is defined as the quotient of the sum of the squared deviations from the mean divided by N-1.…

A:

Q: 33. A straight line of length a is divided into two parts. Find the mean value of the rectangle…

A:

Q: The overhead reach distances of adult females are normally distributed with a mean of 200 cm and a…

A: Given: The overhead reach distances of adult females are normally distributed with a mean of 200 cm…

Q: Quantitative or Qualitative Variable Identify each variable as either quantitative or qualitative.…

A: Qualitative variable : When the characteristic being studied is nonnumeric , it is called…

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: Solution: Given information: n1= 138n2= 84x1=…

Q: The following data are obtained in the survey on the number of cell phones possessed by each family.…

A: Solve first three sub-parts in a multiple sub-part question, unless the student has asked for…

Q: In two sets of variables X and Y with 50 observations each, the following data were observed X = 10,…

A: Given: Number of observations is 50 Coefficient of correlation r=0.3 Mean of X is X¯=10 Standard…

Q: English Air continually monitors the proportion of overweight items checked by passengers on its…

A: The provided information is a. n1=226,  n2=300x1=30,  x2=54α=0.01The null and alternative hypothesis…

Q: Please specify the key problem with this question included in a questionnaire: "When using the…

A: Given Question: "When using the Internet, do you pay attention to some of the ads?"  The objective…

Q: A certain reducing weight program has produced the following weight (lbs.) changes in ten students.…

A: Solution-: We have following data: Before (xi) After (yi) 124 105 138 115 113 110 129 110…

Q: elect the correct null hypothesis, H0, and alternative hypothesis, Ha, in symbolic form.…

A:

Q: 4. The mean score of 100 BS Biology students on a 100-item chapter test is 92. midpoint method. What…

A: Midpoint Method  Mean = x¯=x1+x2+...+xnnwhere n - number of observationsx¯=∑fixii∑ifi Deviation…

Q: An industrial plant wants to determine which of two types of fuel, electric or gas, is more cost…

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

Q: 3) Let X1, X2, ., X, be i.i.d. N(01,02). Show that the likelihood ratio principle for testing Ho :…

A: Given that,     Let X1,X2,.....,Xn be i.i.d Nθ1,θ2 Hypothesis      H0:θ2=θ2'H1:θ2≠θ2' where θ1…

Q: In a recent study of 43 ninth-grade students, the mean number of hours per week that they played…

A: We have given that,  Sample mean (x̄) = 19.34, standard deviation of the population (σ) = 4.8 and…

Q: A] Measurement error in the dependent variable leads to biased OLS estimates? a-Yes, always b No,…

A: A. c It depends on the correlation between the error term and the dependent variable Measurement…

Q: Which of the following changes we would expect to result in a reduced interval width (select the…

A: We have given that  The 90% confidence interval is (1000, 2100).

Q: In a restaurant, 100 tables had been served. Of these tables, 15 had dish A only, 20 had dish B…

A:

Q: Last year, 43% of business owners gave a holiday gift to their empioyees. A survey of business…

A:

Q: 1. A university conducted a study to track its graduates for the past 5 years. The survey…

A: (1)

Q: Here are summary statistics for randomly selected weights of newborn girls: n = 236, x= 30.3 hg, s=…

A: Given: n = 236 x¯ = 30.3  s = 6.1

Q: 59. square of aistance OJ point withln a given square of side 2a from the centre of the square.

A:

Q: 5 5 5.5 5 5.5 9 7 8 9 6 7 8 8 7 8.5 Using Jamovi, and assuming we’re testing at an…

A:

Q: In a school, the students were classified according to the following departments. Classification…

A: Population is the whole observation involve in the study. Sample is the fraction of observation can…

Q: random sample of 25 men’s resting pulse rates shows a mean of 72 beats per minute and a standard…

A:

Q: IN A CITY 250 MEN OUT OF 750 WERE FOUND TO BE SMOKERS. DOES THIS INFORMATION SUPPORT THE CONCLUSION…

A:

Q: 2. For each of the following problems: 1) Indicate which measure/s of morbidity (prevalence,…

A: Morbidity frequency measures the number of people in a population who get sick (incidence) or are…

Q: What is the fair price for this game?

A: here given there is total four prizes in box  A player will reach into the box and draw one of the…

Q: a box contain 4 apple candies and 5 orange candies. If Ana will pick one at a random what is the…

A: The number of apple candy is 4 and orange candy is 5. Total number of candy is 4+5 =9 Total number…

Q: light is shown for a continuous interval of ten minutes in an hour. An observer watches the light…

A:

Q: 200 lottery tickets are sold for $5 each. The person with the single winning ticket will get $63.…

A: Solution Given, 200 lottery tickets are sold for $5 each.  The person with the single winning ticket…

Q: IM a. What is the probability that a bulb is defective? b. Hence, what is the probability that two…

A: here given  n= 12 electric bulb probability of no defective bulb  =  0.5072

Q: Researchers conduct a study to determine that having a gene disruption may be related to an…

A:

Q: 12) The Human Resource department of Lala firm has summarized the number of service years of their…

A: The objective is to determine the position and dispersion of the given data.