Question 5: The one-sample t-statistic for a test of Ho: µ = 15 versus Ha: u # 15 based on 18 observations is calculated ast = -2.17. What is the p-value for this test? Answer:
Q: The manager of a supermarket tracked the amount of time needed for customers to be served by the…
A: From the provided information, The checkout times are exponentially distributed with a mean of 5…
Q: If 10% of certain products are found to be defective, using both Binomial and Poisson models, find…
A:
Q: Transition diagram: Exercise: find the missing probabilities a, b, c, and d when N = 3. Express them…
A:
Q: 15. The Exotic Fruit Juice Co. sell cartons of Passion Fruit and Orange fruit juice. The amount of…
A:
Q: The SAT and ACT college entrance exams are taken by thousands of students each year. The scores on…
A: (a) Obtain the percent of students would score less than 550 in a typical year. The percent of…
Q: 10 0 X y 0 1 0 1 Z If | 0 0 0 | find x, y and z.
A:
Q: What is the standard deviation of the following sample data: 49, 13, 20, 46, 45, 12. Round to 2…
A:
Q: Consider the following decisions. a) You are trying to decide whether or not to go on a blind date.…
A:
Q: The symbol σˆpσp^ represents the proportion of a sample of size n.
A: here use basic of distribution of sample proportion
Q: The following items represent the number of birds observed at a given feeder over the past several…
A: Mode : Mode is the number in the data set that occurred most frequently
Q: What is the probability that a waitress will refuse to serve alcoholic beverages to only 2 minors if…
A: Suppose there is a finite population of size N that contains exactly K objects that has a specified…
Q: 2.) Determine the mean, median, mode, and midrange of the following data set. 6, 8, 12, 13, 15, 11,…
A:
Q: Find the following probabilities for the standard normal random variable z: (a) P(−2.19 ≤ z ≤ 2.2) =…
A: We will use Std. Normal table to find the required probabilities.
Q: The average woman's height is 65 inches with a standard deviation of 3.5 inches. What proportion of…
A:
Q: Supposed two coins are tossed and we are interested to determine the number of heads that will come…
A: A random variable is a variable whose values depend on outcomes of a random experiment. It is…
Q: The average woman's height is 65 inches with a standard deviation of 3.5 inches. What proportion of…
A:
Q: Let's say, we are given a dataset for 100 people analyzing their modal choice. Only two models are…
A: a. Given information:
Q: Exercise 1. Illustrate the value of the following t-distributions. a. two-tailed with a = 10% and…
A: By using t critical value calculator
Q: If X and Y have the joint pdf fx.x (x, y) = 2 0<x<y≤ 1 fy(1/2) = fx|Y=1/2 (1/6)= P(0<x<1/8|Y=1/2)
A:
Q: Carlson Jewelers permits the return of their diamond wedding rings, provided the return occurs…
A: Given that 10% of the diamond wedding rings are returned. Five different customers buy a wedding…
Q: Describe a procedure to physically generate random numbers on the interval [0, 1] with two-digit…
A:
Q: A spinher iš broken into equally sized slices labeled 1 to 20. What is the probability that a random…
A:
Q: 40% of people prefer the mountains to the beach. Someone who prefers the mountains is 5 times as…
A:
Q: 1. Compute the value of (), for n > 3.
A: Formula: nr=n!r!n-r!
Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum…
A: As per company guidelines I solved exactly three subparts of the question.thank you
Q: 64. Employee training. All welders in a factory begin as apprentices. Every year the performance of…
A:
Q: 4. Suppose that a sports event, called, 'Palarong UPLB', which is played annually by different…
A:
Q: A treebank is often used to assign probabilities to rules in a PCFG. Is there a chance that certain…
A:
Q: Four-week summer rainfall totals in a certain section of the Midwestern United States have a…
A:
Q: Q14. The following spinner has outcomes: 2, 3 and 5 Pr (3) = Pr (5) ; Pr (2) = 1/4. 3. What is the…
A:
Q: A recruiting firm finds that 30% of the applicants for a certain industrial job have advanced…
A: Solution-: Given: p=0.30 (Or 30%) We want to find, (a) P(the first applicant having advanced…
Q: PROBLEM (8) A risk averse decision maker with u(x) = square root(x) faces a lottery L that delivers…
A:
Q: Lin scores on 85% of her free throws. What is the expected waiting time before she misses the basket…
A: The lin scores on free throws is 0.85.
Q: In response to concerns about nutritional contents of fast foods, McDonald's has announced that it…
A: Given: n = 100 x = 3
Q: 1 -) EXCERSICE Let X₁,..., Xn be a random sample from the pdf f(x x < x. (a) Show that X(1) = min,…
A:
Q: YOU are in charge of a new products being launched by "Incredible Circuits". Mr. Eleck Trikal,…
A:
Q: An airline company is considering a new policy of booking as many as 262 persons on an airplane that…
A: Given n=262 P=0.84
Q: 4.) Determine the range and Standard Deviation of the set of data 4, 8, 9, 11, 13, 15
A:
Q: shing Poles: Determine the range and standard deviation of the following prices of selected fishing…
A:
Q: 4. Suppose that a sports event, called, 'Palarong UPLB', which is played annually by different…
A:
Q: • Is this theoretical or empirical? Explain. • Draw a Venn Diagram using one circle to represent…
A: In the given case the observed data is not obtained by carrying out an experiment or analyzing any…
Q: An analyst has derived the following for projects for a retail shopping center owned of Peterson,…
A: Given information An analyst has derived the following for projects for a retail shopping…
Q: Construct your own story problem using the data below, answer it. X= 148 E = 0.91 95% level of…
A:
Q: The time that a butterfly lives after emerging from its chrysalis can be modelled by a random…
A:
Q: A card is drawn from a deck of cards, the result recorded, and the card replaced. If the experiment…
A: A number of events are said to be independent if the probability of occurrence of any one of them is…
Q: An engineering company has four openings and the applicant pool consists of 6 database…
A: Number of applicants who are database administrators = 6 Number of applicants who are network…
Q: A random variable is normally distributed with a mean of μ = 50 and a standard deviation of σ = 5.…
A: Given Mean(μ)=50standard deviation(σ)=5
Q: A frequency table of grades has five classes (A, B, C, D, F) with frequencies of 5, 13, 13, 6, and 2…
A: We have given that, Grade Frequency (f) Relative frequency A 5 B 13 C 13 D 6…
Q: QUESTION 5 A lottery has a grand prize of $1,000,000, 4 runner-up prizes of $50,000 each, 14…
A: Given: The grand prize given is E1=$1 million=$1,000,000. The prize money won by 4 runners up is…
Q: Find x and y. if (x y) (² _-3) = 4 -1 = (2-4).
A:
Step by step
Solved in 2 steps with 1 images
- Question 2 There is a claim that drink driving has been very common in high ways. The Highway Police randomly caught 300 drivers for breath alcohol test and found that 14% of drivers have breath alcohol over the legal limit. At 4% level of significance, use the p-value approach to test the hypothesis that the percentage of drivers who are drink driving is more than 10%.Question 2 A manufacturer of sprinkler systems used for fire protection in office buildings claims that the true average system-activation temperature is 130 degrees. A sample of 9 systems when tested yields a sample average activation temperature of 131.08 degrees. If the distribution of activation times is normal with standard deviation 1.5 degrees, test at the 1% level of significance to see if the data shows evidence that is different from the manufacturers claim. (d) Calculate the p-value for this test. (e) State the conclusion of this test. Give a reason for your answer.Question 2 A manufacturer of sprinkler systems used for fire protection in office buildings claims that the true average system-activation temperature is 130 degrees. A sample of 9 systems when tested yields a sample average activation temperature of 131.08 degrees. If the distribution of activation times is normal with standard deviation 1.5 degrees, test at the 1% level of significance to see if the data shows evidence that is different from the manufacturers claim. (a) State the null and alternative hypotheses for the test. (b) What is the test statistic? (c) Calculate the value of the test statistic for this test. (d) Calculate the p-value for this test. (e) State the conclusion of this test. Give a reason for your answer.
- Question 1 An educator claims that the average salary of substitute teachers in school districts in Allegheny County, PA is less than $60 per day. A random sample of eight school districts is selected, and the daily average salary (in dollars) is $58.88 with a sample standard deviation of $5.08. Set alpha = 0.10 for this test. Is there enough evidence to support the educator’s claim? Question 2 A tobacco company claims that its best-selling cigarettes contain less than 40mg of nicotine. This claim is tested at the 1% significance level by using the results of 15 randomly selected cigarettes. The mean is 42.6 mg and the standard deviation is 3.7mg. Evidence suggests that nicotine is normally distributed. Is there enough evidence from this study to support the claim of the tobacco company? Question 3 A survey of 15 large U.S. cities finds that the average commute time one way is 25.4 minutes. A chamber of commerce executive feels that the commute in his city is less and wants to…You obtain a t comp of .975 in a two sample independent t test with alpha at .05. Is it significant?Question 14 State the conclusion of the test based on a p-value of 0.2681, if we use a 5% significance level. Reject H0 Do not reject H0
- Question 4 Compute the z score for a score of 90 on a test that has a mean of 92 and a standard deviation of 2.QUESTION 5 PART A- Carry out a formal t-test for the association between extroversion and neuroticism in personalities. H0: The population correlation coefficient is 0. HA: The population correlation coefficient is not 0. What is the critical value of the t-statistic required to reject the null hypothesis at a confidence level of 0.05? (Report the absolute value. The t-distribution is symmetric, thus it is easier to compare the absolute value of the t-statistic with the positive values in statistical table C). QUESTION 5 PART B- The data in chocolate_nobels is not bivariate normal. Plot a scatter plot of the data. Based on the scatter plot, how does the data deviate from bivariate normality? There are outliers The standard deviation of both variables seems to increase as the variables increase. The relationship between the two variables is not linear. The standard deviation of the Nobel prize winners seems to increase as chocolate…QUESTION 18 A manufacturer of car batteries claims that his product will last at least 4 years on average. A sample of 50 is taken and the mean and standard deviation are found. The test statistic is calculated to be -1.656. Using a 5% significance level, the conclusion would be: there is sufficient evidence for the manufacturer’s claim to be considered correct there is insufficient evidence for the manufacturer’s claim to be considered correct there is insufficient evidence for the manufacturer’s claim to be considered incorrect there is sufficient evidence for the manufacturer’s claim to be considered incorrect
- question 3 Sixty gym members were randomly selected and their weights were recorded and inputted into MINITAB. The results are summarized in Exhibit 1 below. One-Sample Z: WeightTest of mu = 195 vs < 195The assumed standard deviation = 22.11 Variable N Mean StDev SE MeanWeight 60 193.13 22.11 * i. Calculate the value of *? ii. State the null and alternative hypotheses for the test. iii. What is the value of the test statistic for this test.? iv. Calculate the p-value for this test. v. State the conclusion of this test. Give a reason for your answer.QUESTION 4 PART A- What is the standard error of the correlation coefficient for the association of extroversion and neuroticism in personalities? QUESTION 4 PART B- Carry out a formal t-test for the association between extroversion and neuroticism in personalities.xls. H0: The population correlation coefficient is 0. HA: The population correlation coefficient is not 0. What is the value of the t-statistic corresponding to this test? (Report the absolute value. The t-distribution is symmetric, thus it is easier to compare the absolute value of the t-statistic with the positive values in statistical table C). DATA IS ATTACHED.QUESTION 16 A researcher wants to compare the mean concentration of two medications considered biologically equivalent, i.e., two medications that are able to produce the same therapeutic effect at the same level of concentration in the blood. The group of individuals on medication one (n = 32) had a mean blood concentration of 21.7 micrograms per milliliter with a standard deviation of 8.7 micrograms per milliliter. The group of individuals on medication two (n= 32) had a mean blood concentration of 19.4 micrograms per milliliter with a standard deviation of 5.2 micrograms per milliliter. Construct and interpret a 95% confidence interval demonstrating the difference in means for the individuals on medication one when compared to the group of individuals on medication two. The researchers are 95% confident that the true mean difference in medication concentration levels between individuals on medication one and individuals on medication two is between 4.867 micrograms…
