The average public elementary school has 468 stu deviation of 87. If a random sample of 38 public el what is the probability that the number of studen 485? (7pts.) * Read, analyze, and solve the problems below. Show your comple Add file

Q: PROBLEM 1: The researcher would like to know whether academic performance of students in public…

A: The choice of appropriate hypothesis test depends on various factors.

Q: Internet tax: The Gallup Poll asked 1043 U.S. adults whether they believed that people should pay…

A:

Q: Step 1 of 5:  State the null and alternative hypotheses. Round to four decimal places when…

A: Given that  Sample size n =30 Sample standard deviation s=7.0674 Population standard deviation =13…

Q: The scores that golfers shot on 18 holes at a local course were tabulated. The results are shown in…

A: Given that data  Class Frequency 68.5 - 73.5 5 73.5 - 78.5 6 78.5 - 83.5 10 83.5 - 88.5…

Q: data: 1 1 2 3 4 4 4 8 9 10 solve for: a. mean b. median c.mode   manual computation

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Q: Mr. Breuer is very proud of his hybrid vehicle, so he collected data about the number of gallons (x)…

A: Sactterplot shows the relationship between the two variables whether it is linear or non linear.

Q: for a certain company, the monthy percentages ot al hipments received on time over the past 12…

A: a) Enter the data into the excel sheet as follows: a) The time series plot is constructed below.…

Q: 10% of all Americans live in poverty. If 47 Americans are randomly selected, find the probability…

A: Let X be the random variable from binomial distribution with probability (p) = 10% = 0.10 and sample…

Q: What is the value of the test statistic? Round your answer to two decimal places. z = i What is the…

A: here given , po^ = 0.92pc^ = 0.86 null and alternate H0 : p0 = pcH1 : p0 > pc

Q: Find the critical values x and x? for the given confidence level c and sample size n. c= 0.98, n= 15…

A: Given that  Confidence level=98%=0.98=c Sample size=n=15

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: Given thatMargin of error (E) = 5% = 0.05Significance level (α) = 1 - 0.90 = 0.10

Q: Part II. In each of the following scenarios, determine if the data are paired. (a) We would like to…

A: Paired data are often required in statistical hypothesis testing.

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

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Q: (d) Find the p-value. (Round to three or more decimal places.) (e) Is there enough evidence to…

A: For the given data P value =? Conclusion =?

Q: A regular bus ride departs on time has a probability of 71%; the probability that it arrives on time…

A: D=departure  Given P(D)=71%=0.71, P(A)=43% =0.43  P(D ⋂ A)=36%=0.36 =P(D and A)

Q: (H.0.P. ) ce, 2, L74.2). Para me ter 1) Average Whivernty of the Phili ppiner trupi gra duates at…

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

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given that  Margin of error=E=3%=0.03 95% confidence  level

Q: 18. In the scatterplot of y versus x shown above, the least squares regression line is superimposed…

A: We will tell you which one is the correct choice

Q: Hypothesis testing using t: Two-sample We test whether “cramming” for an exam is harmful to grades.…

A: Given data we test whether cramming for an exam is harmful to grades.

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Given that  Sample size n =200 Favorable cases x =30 Sample proportion p^=x/n  =30/200 =0.15

Q: 10. Sketch a scatterplot for these data: 10 8 4 3 2 1 1 2 3 4 7 8. 9. 10

A: We have given that the data of 7 participants A, B, C, D, E, F and G.

Q: A beta distribution has parameters a = 3 and b = 7.  P( 0.4 < X < 1) =  _______________ Your…

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Q: Generate 20 random numbers from 1-20 and get the following data. A. 3rd Quartile B. 7th Decile C.…

A:

Q: Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the…

A: Given that  Sample size n =15 Sample mean =5.4 Standard deviation =2.7 NOTE:- According to bartleby…

Q: 45. A researcher measures IQ and weight for a group of college students. Which kind of correlation…

A: We have given the following statement about the correlation.

Q: Chi-Square Distribution Isa Foods wishes to see whether there is any preference in the flavors of…

A:

Q: A correlation of r = 0.64 is stronger than which of the following correlations?   r = –85 r = –71 r…

A: A correlation of r = 0.64 is stronger than which of the following r = –85 r = –7 r = 0.5 r = –6 All…

Q: 2. Consider the foot length and foot width of six fermale grade 4 students in Morning Star…

A: Standard deviation is given by, Sx = √E(X2)-(E(X))2 E(X)= ∑xi/n E(X2)= ∑xi2/n

Q: Charter National Bank has a staff of loan officers located in Its branch offices throughout the…

A: Given Information: Consider the given data: Officer 1 2 3 4 5 Weinraub 60 74 52 48 67 Visser…

Q: Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is…

A: Given data mean=2.68  standard deviation=0.93

Q: sample size is large, it does'nt matter what shape the distribution of the population it was drawn…

A: It is to be known about the central limit theorem is that When the sample size is large i.e. n is…

Q: Calculate the standard score of the given X value, X=28.3X=28.3, where μ=26.3μ=26.3 and…

A: Given X=28.3  μ=26.3 σ=28.1

Q: The average amount of money that people spend at Don Mcalds fast food place is $7.5000 with a…

A:

Q: The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is…

A: GivenMean(μ)=3287variance(σ2)=198025standard devaition(σ)=198025

Q: If the equation of the regression line for hours xx  spent cycling in the summer and hours yy  spent…

A: The regression equation is given by y = -0.7x + 42 Where x = hours spent cycling  y = hours spent…

Q: Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Hg:…

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Q: Find the minimal sufficient statistics for each of the following cases: (a) Poisson(A) (b)…

A: We know that the minimal sufficient statistic is a function of the sample that provides the greatest…

Q: In an M/M/1 queueing system, the arrival rate is 9 customers per hour and the service rate is 12…

A:

Q: From this regression equation, we know that r, or the correlation between days of rain and hours of…

A: It is given that The regression equation is Predicted hours of sunshine = 2847 – 6.88(days of rain)

Q: the l-value egrees of symmetry.] (Round to three decimal places as needed.) (d) Find the critical…

A:

Q: 70 adults with gum disease were asked the number of times per week they used to floss before their…

A: Here we have to complete the frequency distribution tables colums like frequency..,relative…

Q: In each problem show all steps of the hypothesis test using PHANTOMS.  If some of the assumptions…

A: Given:   Sr. No. Data (x) 1 1.36 2 1.42 3 5.93 4 5.36 5 0.06 6 9.11 7 7.32 8…

Q: Iranian researchers studied factors affecting patients' likelihood of wearing orthodontic…

A: For the given data Use Anova one way

Q: Using R, calculate the mean and standard deviation for age of first period for this sample of women.

A: The objective is to calculate the mean and standard deviation for age of first period for this…

Q: Chi-Square Distribution GDC Clothing Inc wants to know whether customers prefer any color over…

A: It is needed to test, whether there is a color preference for the shirts.

Q: The 600 students in a faculty include undergraduates and postgraduates who may study full time or…

A: Given that,  Total number of students are n(s)= 600 Part time student are n(X2)= 50  Undergraduate…

Q: The FDA regulates that fish that is consumed is allowed to contain at most 1.0 mg/kg of mercury. In…

A: This question is based on hypo testing for a popl mean. Here, popl std deviation is unknown so we…

Q: As part of your work for an environmental group, you want to see if the mean amount of waste…

A:

Q: 9. Calculate the Pearson Correlation Coefficient (r): (SHOW YOUR WORK)

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   2 4 8 4 16   1 3 3 1 9   3 3 9 9 9   6 6 36…

Q: +++++ it. b 10. Which data set has the smallest standard deviation of the x-coordinates?

A: