In a chi-squared goodness of fit test, the test statistic value was x = 28.44, and the critical value at a = 0.01 was 15.09. Thus: O a. None of the above. O b. We reject the null hypothesis OC. We fail to reject the null hypothesis There is not enough evidence to accept or reject the null hypothesis
Q: llustration 16.49. There are two series with 5,000 lottery tickets in each. There is only one prize ...
A:
Q: Example 21. Find the standard deviation for the following distribution: Marks 10 - 20 20 – 30 30 – 4...
A:
Q: The table displays the number and type of tickets bought for a play that was performed in both the a...
A: Let A represents 'a child tickets is bought for a play' and B represents 'the play is performed in t...
Q: Under what circumstances should you choose an alternative referencing style? You can choose any styl...
A: First we have to understand the meaning of referencing. Referencing - Act of acknowledging other's ...
Q: 1. ________ are those events in which the probability of occurrence of an event is not affected by t...
A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only fi...
Q: A box contains 17 transistors, 4 of which are defective. If 4 are selected at random, find the proba...
A: A box contains 17 transistors, 4 of which are defective. HERE 4 are selected at random here it is w...
Q: 1. Apply the addition rule, P(mean or median) = P(mean) + P(median) - P(mean and median), to find th...
A: We have given that P( mean or median ) = 30% = 0.30 P( median ) = 16% = 0.16 P( mean ) = 27% = 0.27
Q: be your minimum score if you want to belong to the upper 10% of the group?
A: We have given that. X~N( μ , ?^2 ) μ =38 , ? =4 Z-score =( x - μ )/?
Q: You flip a fair coin twice. X is 2 if the first coin is heads and 4 if the first coin is tails. Y is...
A: Probability of a random variable is computed by dividing the frequency by the sum of frequency. This...
Q: Recently, the bowling scores of a certain bowler were normally distributed with mean 202 and standar...
A: given that mu=202,sigma=19 Find the probabilities
Q: Suppose the grades in a finite mathematics class are Normally distributed with a mean of 75 and a st...
A:
Q: Consider an ETNB distribution with r = -0.25 and ß = 1. Determine the probability of the ETNB for th...
A:
Q: To perform a certain type of blood analysis, lab technicians must perform two procedures. The first ...
A: Suppose an experiment must perform two procedures. That is, A and B. A requires either a1 or a2 step...
Q: An experiment consists of rolling a die until a 3 appears. List the elements of an event E, that eve...
A: Let A denotes any other number on die. Then 3 can appear on the first roll then first element is 3...
Q: In your school with 400 Grade 11 students, the final examination in General Mathematics has a mean 3...
A: From the provided information, Mean (µ) = 38 Standard deviation (σ) = 4 X~N (38, 4) Here X be a rand...
Q: Let X be a random variable such that P(X) = 0.25 for x = 1, 2, 3, 4| .What is |P(5) ?
A:
Q: lim (x + 5)(2x + 5) 1) (x – 2) (b) x → * (3x + ·
A:
Q: Pr(A n B) = 0.1 Pr(A) = 0.2 Pr(B') = 0.5 Hence, fill in the intersection table: A A' В B'
A: It is given that Pr(A∩B)=0.1, Pr(A)=0.2 and Pr(Bl)=0.5.
Q: 3.The recommended dosage for a particular medication is 1/3 gram for every 40 pounds of body weight....
A: Let x be the prescribe doctor prescription in ounces
Q: What is the value of P(X<2) 0 1 2 3 4 5 P(X=x) 0.05 0.10 0.20 0.40 0.15 0.10 A.) 0.15 B.) 0.35 C.) 0...
A: Let X be the random variable having probability distribution is, X 0 1 2 3 4 5 P(X) 0.05 0.10...
Q: When considering the regression model y,-Po+P,,+,+w,+", Which of the above will not be evidence of h...
A: The Heteroscedasticity can also be identified by constructing residual plots between the explanatory...
Q: In the following equation, P(cancer positive test): P(positive test cancer) P(cancer) P( positive te...
A: In this case, it is needed to define the prior probability.
Q: In your school with 400 Grade 11 students, the final examination in General Mathematics has a mean 3...
A:
Q: Pr(A n B) = 0.2 Pr(A) = 0.3 Pr(B') = 0.5 Hence, fill in the intersection table: A A' B B'
A: It is given that, Pr(A ∩ B) = 0.2, Pr(A) = 0.3 and Pr(B’) = 0.5.
Q: Suppose that on a certain messaging service, 4.63% of all messages fail to send. Thus, in a random s...
A:
Q: Let X be the number of tails that turned up when two fair coins are tossed. What are the possible ou...
A:
Q: An event B has probability 0.6. If A and B are An event A has probability 0.7. independent, which of...
A:
Q: (c) The probability that the second marble is red
A: Given that, bag contains 8 red marbles, 7 white marbles, and 9 blue marbles. Randomly choose two mar...
Q: What is the probability that the students she selects are both girls? Write your answer as a fracti...
A: A science class has 4 girls and 1 boy in the seventh grade and 5 girls and 5 boys in the eighth grad...
Q: Which of the following is true about the variance and standard deviation. A.) as the value gets larg...
A: We have given the following statement about the variance and standard deviation Note: According to B...
Q: Find the minimum sufficient statistic in the following situations. In order to establish minimality,...
A: Please note that as per our guidelines if multiple questions are posted we can answer the first ques...
Q: Exercise 5.4 A lot of 75 washers contains 5 defectives whose variability in thickness is unacceptabl...
A: Probability mass function : A probability mass function (pmf) is a function over the sample space of...
Q: An electric firm manufacture light bulb that have a length of life that is approximately normally di...
A: We have given that. X~N( μ , ?^2 ) μ =800 , ? =40 ,n=16 Z-score =( x - μ )/?
Q: 4. The joint PDF of two continuous random variables X and Y is given by fx+y 0<x<1, 0<y < 1 S(x, y) ...
A:
Q: expected number of times the ball numbered 1 is observed
A: Consider an urn containing 1000 balls. Suppose that the balls are numbered from 1 to 1000. If we dra...
Q: (7 remaining) The Center for Medicare and Medical Services reported that there were 295,000 appeals ...
A:
Q: The probability that a man hits a target is 12 and that of his son and daughter are 25 and 15 respec...
A: Note: As per guidelines we will only answer the first three subparts, please repost other subparts f...
Q: 6 - How many different two-letter passwords can be formed using the letters A, B, C, D, E, and F if ...
A: given letters A B C D E F total no. of letters = 6 we need a two letter password
Q: The geographical distribution of the hometown of 80 students of ADU is given as: 50 from Luzon, 10 f...
A:
Q: A consumer products company is formulating a new shampoo and is interested in foam height (in millim...
A:
Q: A production process manufactures electronic components with timing signals whose duration follows a...
A: Here we have given that X ~ N (µ, σ )
Q: Sample size 9 whose data are given below is drawn from a population having a mean = 8 and standard d...
A: Solution-: We have, n=9,μ=8,σ=5 To obtain the standard deviation of the sampling distribution=?
Q: Let {X„} be a time homogeneous Markov Chain with sample space {1,2, 3, 4} and transition matrix P = ...
A: In question, We have given a Transition probability matrix of a Markov chain. Then we'll find the st...
Q: The gym which provides the training expects the increase in enrollments in 2022 to be similar to pas...
A: Given information: μIncrease=13%σIncrease=1.4%Last year's number of enrolles=80,000
Q: What is the probability of drawing two aces from a standard deck of cards, given that the first card...
A: There are 13 aces and total 52 cards in a deck. The probability of drawing first card that is ace i...
Q: Find the probability that in five years' time : (a) both machines will be performing a usual functio...
A: Here Given two machines A and B And Probability their preforming usual in 5 years time P(A)=14=0.2...
Q: Airline passengers arrive randomly and independently at the passenger-screening facility at a major ...
A: Given Lamda=11
Q: ou own your own consulting firm in Business Information Analytics. You charge $350 and hour. A smal...
A: Given: Sample size (n)=4Probability (p)=0.25q=1-p =1-0.25 =0.75 X follows binomial distribution wi...
Q: Exercise 5.6 The number of cracks that need repair in a section of interstate highway follows a Pois...
A: The number of cracks that need repairs in a section of interstate highway follows a Poisson distribu...
Q: The random variable x is known to be uniformly distributed between 20 and 40. The probability of x h...
A: Given a = 20 b = 40
Step by step
Solved in 2 steps
- The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2019 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2019 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?Elsa is using a one-sample ?‑test with a sample size of 11 to test the null hypothesis, ?0:?=6, against the alternative, ?1:?>6. She requires her results to be statistically significant at a significance level of ?=0.05. What is the minimum critical value of ? that rejects this null hypothesis? Give your answer precise to three decimal places. ?=A nationwide study of undergraduate students reported that the mean number of drinks consumed per week during the spring semester is 7.96. The mean number of drinks consumed per week at USC is 7.64 (s.d.=2.55, N=412 Health services is concerned that USC students are consuming significantly more alcohol per week than the national average. Using an alpha level of .05, Is there sufficient evidence to be concerned? Be sure to select the correct critical value for the alternative hypothesis, and then use this evidence to make your conclusion
- The test statistic of z = 0.85 is obtained when testing the claim that p > 0.2. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. Find the P-value. Using a significance level of α = 0.10, should we reject H0 or should we fail to reject H0?Consider the following hypothesis test : H0:μ =12.5 Ha:μ ‡12.5 **THAT A sample of size 18 provided a sample mean (12.9) and sample standard deviation is (0.8). a-Compute the test statistic. b-Determine the range of p-value from the table of t-distribution? What is the rejection rule ? and what is your conclusion at α=0.01? c-What is the rejection rule ,using critical vale approach? What is your conclusion at α=0.05?Consider the following hypothesis test: H0:μ = 15 Ha:μ ≠ 15 A sample of 50 provided a sample mean of 14.15. The population standard deviation is 3. a. Compute the value of the test statistic. b. what is the p-value? c. At α = 0.05, what is your conclusion? d. what is the rejection rule using the critical value? what is your conclusion?
- The test statistic of z = -2.27 is obtained when testing the claim that p < 0.32 Part A: using a significance level a= 0.10, find the critical value(s)Q1/ Consider the following hypothesis test : H0:μ 65 Ha:μ 65 A sample of size 15 provided a sample mean (63) and population standard deviation is (2). a-Compute the test statistic. b-Compute p-value from the table? What is the rejection rule ? and what is your conclusion at α=0.05? c-What is the rejection rule ,using critical vale approach? What is your conclusion at α=0.05? .............................................................................................................................. Q2/ Consider the following hypothesis test : H0:μ =12.5 Ha:μ ‡12.5 A sample of size 18 provided a sample mean (12.9) and sample standard deviation is (0.8). a-Compute the test statistic. b-Determine the range of p-value from the table of t-distribution? What is the rejection rule ?Q1/Consider the following hypothesis test : H0:μ 65 Ha:μ 65 A sample of size 15 provided a sample mean (63) and population standard deviation is (2). a-Compute the test statistic. b-Compute p-value from the table? What is the rejection rule ? and what is your conclusion at α=0.05? c-What is the rejection rule ,using critical vale approach? What is your conclusion at α=0.05? ........................................................................................................................ Q2 /Consider the following hypothesis test : H0:μ =12.5 Ha:μ ‡12.5 A sample of size 18 provided a sample mean (12.9) and sample standard deviation is (0.8). a-Compute the test statistic. b-Determine the range of p-value from the table of t-distribution? What is the rejection rule ?
- The test statistic of z equals=0.99 is obtained when testing the claim that p greater than >0.2 a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of alpha=0.01, should we reject H0or should we fail to reject H0?Consider the following hypothesis test: H0:μ = 18 Ha:μ ≠ 18A sample of 48 provided a sample mean x̅ = 17 and a sample standard deviation s = 4.5. a. Compute the value of the test statistic. b. use the t distribution table to compute a range for the p-value. c. At α = 0.05 , what is your conclusion? d. what is the rejection rule using the critical value? what is your conclusion?You are asked to test the null hypothesis at the .05 level of significance and you end up with z-observed being equal to -1.83. What would be the appropriate decision to make?
