1. A researcher is interested in knowing if there is a sigh performance of grade 4 students in entrance test and final examination. He gathered 16 samples compared their scores in two tests. The obtained data are given below. 18 27 22 34 31 31 29 9 30 28 14 8 Entrance Test 36 45 12 40 23 24 48 36 34 43 16 43 Final 20 28 43 33 27 28 16 28 Examination At a = 0.05, test the claim that students performed better in the entrance examination.

Q: 6. A women arrives at an airport between 11 and 12 o'clock. she waits for her husband for 10 minutes...

A: The woman arrives between 11:00 - 12:00'o clock she waits for her husband for 10 minutes. The man co...

Q: Which of the following is NOT a principle of probability? Select one: O a. the probability of an imp...

A: According to principle of probability, The probability of impossible event is 0. Therefore option a ...

Q: Suppose a life insurance company sells a $270,000 one-year term life insurance policy to a 19​-year-...

A: Formula for expected value :  Expected value= ∑xP(x) 

Q: What does this following statment mean? In the Korean Sarcopenic Obesity Study, individuals with T2D...

A: Odds refer to the chances of something occurring. 

Q: reviously, 5.5% of workers had a travel time to work of more than 60 minutes. An urban economist bel...

A:

Q: gender pay gap listed below are women's median earnings as a percentage of men's median earnings for...

A:

Q: employee who was responsible for doing a hypothesis test for the mean length of the product being pr...

A:

Q: SPAS Statement: Suppose X,,X,..,X, are n independent normal valfates with means u,u,. u, and varianc...

A:

Q: In a random sample of five (5) children, the age at which they first began to combine words in speak...

A: Given : Sample size (n) = 5 Sample mean (X¯) = 16.5 Sample S.D (S) = 9.6 Confidence interval =90%  S...

Q: You are driving home one night and must decide if you have enough gas to get home or not. Use the hy...

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

Q: Fifty pro-football rookies were rated on a scale of 1 to 5, based on performance at a training camp ...

A:

Q: To test the claim that the mean is greater than 87, you would use a(n) a. Right tailed test C. Two t...

A: Given,Claim: The mean is greater than 87.

Q: Chinovac Labs tried a new vaccine on 164 randomly selected individuals. From the experiment, it was ...

A: As per our guidelines we are suppose to answer only one question. Given,n=164x=122p^=xnp^=122164=0.7...

Q: Data on fifth-grade test scores (reading and mathematics) for 414 school districts in California yle...

A:

Q: Machine A is later found that it will produce 2 defective toys per hour. According to the most appro...

A:

Q: An upward sloping linear trend line through a scatter plot indicates a a) postive mean b) nega...

A: An upward sloping linear trend line through a scatter plot indicates a

Q: Which of the following cannot be a probability? О а. 7/3 O b. 1 O c. 2/9 O d. 0.47

A: We know that the  value of probability lies between 0 and 1. 

Q: Your chicken farm is a small-scale, family venture, and you don’t have fancy equipment to weigh each...

A: The Empirical Rule states that: About 68 % of the population lies with one standard deviation from ...

Q: Mike has a deck of standard poker cards with some cards missing. He wants to estimate the probabilit...

A: The handwritten solution

Q: 2. Which of the following notations is used for the mean of the population? A. u B. µž С. о D. 0z

A: We have given that,  Which of the following notations is used for the mean of the population?  We ha...

Q: Two professors at a local college developed a new teaching curriculum designed to increase students'...

A: Given that : P = 55%  Sample size (n) = 15 X = 11 By using hypothesis testing concept ee solve this ...

Q: [item#2part1] Instructions: (PLEASE READ!! Kindly answer items i-iii only). Write a description and ...

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts fo...

Q: Direction: Calculate the t-statistic for each of the following. Write your answer on the space provi...

A: It is given that Sample size n = 12 Sample mean = 15 Population mean = 12 Sample SD = 4

Q: 1. Collect five pieces of 5-peso or 20-peso coins 2. Weigh each coin in the analytical balance and ...

A: Given an activity based question asking to collect five pieces of 5-peso or 20-peso coins.

Q: researcher found that 85% of white ash trees in Pennsylvania are damaged by the emerald green ash bo...

A:

Q: For Questions 7 and 8 best for describing the in sentence form. 7) The typical size of h 8) The typi...

A: A singular measure that seeks to represent the central position of a data set is referred to as a me...

Q: Determine the value of c that makes the function f(x, y) = cxy a joint probability density function ...

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

Q: čach of 20 lots of rubber belts contains 2000 rubber belts. Number of defective rubber belts in thos...

A:

Q: f 12 = 0-5, r31 = 0-3, 123 = 0-45, find R3-12.

A: The objective is to find R3.12

Q: e hotel chain needs to apportion 21 new surfboards for its visitors to rent among three hotels based...

A: Given   A large hotel chain needs to apportion 21 new surfboards for its visitors to rent among thre...

Q: A Jal containsS 4 red marbles numbered 1 to 4 and 2 blue marbles numbered 1 to 2. A marble is drawn ...

A: For the given data find the given probabilities in (a)(b)(c)and (d)

Q: Based on the Normal model for car speeds on an old town highway N(77, 9.1), what is the cutoff value...

A:

Q: A survey of customers at a local supermarket asks whether they found shopping at this market more pl...

A: Given : Sample size (n) = 429 Let X : No. of customers that consider this market more pleasing than ...

Q: What is the median of 5.0 6.0 7.0 7.5 8.0 9.0 10.0

A:

Q: A regression analysis with formula y= 30 + 2x has a standard error of 1, and a t-statistic of 2.0. T...

A:

Q: An education researcher was interested in examining the effect of the teaching method and the effect...

A: Teachers = 4 Teaching methods = 3 Students are randomly assigned to teacher and teaching method  

Q: 5. [Facebookj An Internet survey asked 525 Facebook users whether the amount of time they spent usin...

A: Any assumption about the parameter or probability function is known as hypothesis testing. For the g...

Q: A die with six sides is rolled three times. What is the chance that the ace (single dot) comes up le...

A:

Q: A researcher is interested in determining the average number of years employees of a company stay wi...

A: Sample size=n=?   

Q: A recent study stated that if a person chewed gum, the average number of sticks of gum he or she che...

A: Givensample size(n)=36Mean(x)=8standard deviation(s)=1α=0.05

Q: 5. What ise meant by the word asymptotic? A. It is close to the origin. B. It forms a bell-shaped cu...

A: Given that  5. What is meant by the word asymptotic? A. It is close to the origin. B. It forms a bel...

Q: Which of the following is a correct interpretation for P(x < 16)? O a. determine a probability that ...

A: Given

Q: The overall differences between treatments is represented by the _________.

A: ANOVA is Analysis of Variance.

Q: Do less agreeable Facebook users tend to spend more time on Facebook? A study (Ivcevic and Ambady, 2...

A:

Q: In a big university with over 10,000 students, 20% of all students work full time. A random sample o...

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

Q: A small country with a population of 8,000,000 consists of four states, A, B, C, and D. There are 15...

A:

Q: (c) Calculate a 90% lower confidence bound for o. i 1.23

A: Here calculate sample variance from given 

Q: College tuition: The mean annual tuiton in Fees for a Samole of 14 private Colleges a standard devia...

A: Givensample size(n)=14Mean(x)=37900standard deviation(s)=7200α=0.01

Q: 1. Construct a 99% confidence interval for the actual proportion of US adults who say they have used...

A: Given: Sample size, n=700 No. of people use online dating site, x=210

Q: Let X be a continuous random variable with the pdf f(r) = 2r, 0 < ar < 1 and zow. We also define Y -...

A: The pdf of X is given by, f(x)=2x, 0&lt;x&lt;1 The CDF of X is given by, F(x)=0, if x&lt;0       =∫0...