A group of university researchers wanted to determine the relationship that exists between the number of hours spent by a student in social media in a day (X) and their grade weighted average (Y). Twelve randomly selected students produced the following findings: Number of GWA Hours 4.0 95 8.0 85 7.0 87 6.5 89 5.5 91 9.0 85 4.0 89 10.0 86 7.5 84 2.0 96 12.0 82 9.0 85

Q: Consider the function: f(x)= −1 − x^2 Which of the following is true? A. This function is a pdf…

A: Please find the explanation below. Thank you

Q: Juan is a tricycle driver in Barangay Talamban. He recorded his earnings (in pesos) for the past 15…

A: Note: As per the guidelines, only 1 question can be answered. Kindly, repost with note for other…

Q: From the long time ex_perience, it is kn=own that the str_ength of a specific wire made by  an…

A: Hypothesis testing is used to test a claim about the population parameter of interest.

Q: Consider a firm with zero coupon bonds that mature in 9 months and combined face value of $100000.…

A: Solution: It is needed to find the value of equity.

Q: Find the area of the shaded region. The graph depicts the standard normal distribution of bone…

A:

Q: Test the significance of the correlation coefficient calculated in question 2 (below) at α = 0.05.…

A: From the given information we conduct Hypothesis test for correlation.

Q: Students in an experimental psychology class did research on depression as a sign of stress. A test…

A: The answer is attached below,

Q: -mo-3-methylpentane with time. Concentration of bromo-3-methylpentane/mM 0 20 45 60 70 77 81 times…

A:

Q: g. Find the 50th percentile. h. Find the minimum for the upper quartile.

A:

Q: Find the area under the normal curve with the following z scores  2.05 -1.5

A: Find P(Z<2.05)=? P(Z<-1.5)=? Note: This value calculated from R software

Q: l asked a grandfather about his age. He told me: My grandson age in days equal to the age of my son…

A:

Q: What is the probability of selling at least 10 P(x ≥ 10) = What is the probability of selling 5 or…

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

Q: The following data represents the rate of return of the stock exchange (x) and the rate of return of…

A: Solution: As per the guidelines only first three sub parts should be answered. If the remaining…

Q: Find the area under the standard normal distribution curve between z= -1.86 and z=2.59. Use The…

A:

Q: JBC Company wishes to test four different gadgets A, B, C, and D. The lifetimes of the gadgets in…

A: The following information has been given: A B C D        33        32        31        27 38…

Q: know the preference of Marikeños regarding vaccine brand for booster shot, the city health officer…

A: Give that, To know the preference of Marikeños regarding vaccine brand for booster shot, the city…

Q: (b) Use a calculator to verify that Ex= 24.7, Ex²90.19, Ey-53.8, Ey²463.36 and Exy - 195.90.…

A:

Q: If the coefficient of determination of a simple regression equation is 0.81, the correlation…

A: Correlation coefficient is the square root of coefficient of determination.

Q: with the point A an int ve gswood Hill. A gron- (c) The advertising company also looked at the two…

A:

Q: 1. Given the data: 29.65 28.55 28.65 30.15 29.35 29.75 29.25 30.65 28.15 29.85 29.05 30.25 30.85…

A: d) The minimum value is 28.15.

Q: onsider the constant function: f(x)=c Suppose that this function represents a continuous uniform…

A:

Q: Today, the waves are crashing onto the beach every 4.1 seconds. The times from when a person arrives…

A: Given a=0 b=4.1

Q: (5) Based on the mean and standard deviation, which of the scores are extremely high or extremely…

A: The z-score of the given data values tells how far raw data is from the mean in terms of the…

Q: d. Between 1 and 9 (including 1 and 9) of them live in poverty.

A: We have given the following information Population proportion = 0.08 Sample = 50

Q: 36. Find mode from the following data. older griquon Classes 10- 20- 30- 40- 50- 60- 70-80-90- 59 69…

A:

Q: Before Pregnant Woman After Treatment Difference Sign Treatment 1 8 3 2 10 7 3 6 5 4 8 10 5 11 10 6…

A: Given data: Pregnant woman Before treatment After treatment 1 8 3 2 10 7 3 6 5 4 8 10 5…

Q: As a sample gets smaller and smaller, the sample mean tends to get closer and closer to the…

A: According to the law of large numbers (LLN) says that if we take samples of large size from any…

Q: A graduating education student is interested to know the engagement of senior high school students…

A: Stratified sampling: In stratified sampling the whole population is divided into two or more…

Q: Find the Pearson r Correlation Coefficient: r = Blank 1 Find the equation of the regression line: y…

A:

Q: 10. Two variables x and y have zero means, the same variance o and zero correlation, show that x cos…

A:

Q: Attendance 155 170 200 188 1) What is the value of Σz? 2) What is the value of >y? 3) What is the…

A: The given data is y = 88, 87, 85, 80

Q: = Consider the hypothesis test Ho: o o2 against H₁: o<o2 respectively. Suppose that the sample sizes…

A: We use f test statistic. F= s12/s22 Calculated value of f for the above information is F= 23.2/28.8…

Q: When a machine is serviced, between 1 and 5 of its parts are replaced. Records indicate that 7% of…

A: From the above information,  Given that, P(X=1)= 0.07 P(X=5)= 0.08 P(X= 4)= 0.12 Lete P(X=2)= a and…

Q: Q2/1- Find the z value to the right of the mean so that a. 96.71% of the area under the distribution…

A:

Q: find the area under the normal  curve  between Z-scores of  -2.06 and 1.91 -1.82 and 2.68 -0.57 and…

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

Q: F r o m t h e g i v e n F r e q u e n c y Di s t r i b u t i o n Ta b l e , c o m p u…

A: F r o m   t h e   g i  v e n   F r e q u e n c y   Di s t r i b u t i o n   Ta b l e ,   c o m  p u…

Q: In the study about the family income and their expenditures, families can save an average amount of…

A:

Q: medical researcher says that less than 79% of adults in a certain country think that healthy…

A: The question is about hypo. testing for popl. prop. Given : Hypothesized prop. of adults who thinks…

Q: Suppose 4 friends start a corporation and are deciding how to split the 80 ownership shares of the…

A: Dictator : if a person can reach the quota without the support of other person than it is dictator.…

Q: If the average number of defects per page is 2. Using Poisson distribution calculate the probability…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Note: Give an interpretation of your results. 1. In a survey conducted by BS Psychology students, of…

A: Formula : CI=p̂ ± ME

Q: BPS used ANOVA to analyze the results of a study to see which of two colors best attracts cereal…

A: Given information: Yellow White 45 21 59 12 48 14 46 17 38 13 47 17

Q: Researchers wondered if there was a difference between males and females in regard to some common…

A: The number of females responded yes is 202 and the total number of females is 522.

Q: The marks on a statistics midterm test are normally distributed with a mean of 78 and a standard…

A:

Q: 3. Define multiple and partial correlation coefficients. For a trivariate distribution, show that…

A:

Q: Suppose that in College Entrance Test, the cutoff score for passing is 85. If the mean of the test…

A:

Q: g. Find the 85th percentile. h. Find the minimum for the upper quartile.

A:

Q: Let X be a random variable representing the number of times that you have to roll two dice until you…

A: Here, the given context follows negative binomial distribution with k = 10 and p = 118 (probability…

Q: following Hogg, McKean & Craig, exercise 11.2.2) Let ?1, ?2, …, ?10 be a random sample from a gamma…

A:

Q: Construct a valid joint PMF for a random vector with 3 components, say W=(X,Y,Z)' And give all…

A: Let X, Y, Z be three discrete random variables which takes the values  X=1,2,3Y=1,2,3Z=1,2 Let the…