2-25. Let A and B be the two possible outcomes of an experiment and suppose P(B)=p and P(A) = 0-4, (i) For what choice of p are A and B mutually exclusive? (ii) For what choice of p are A and B independent ? P (AU B) = 0-7
Q: In this example, how many independent variables are there and how many dependent variables are…
A: Dependent variable is the variable whose value is to measured or predicted. It is also known as…
Q: 1. A lecturer is interested in finding out if tutorials help students to learn better. He divides…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: Suppose there are three balls in a box. On one of the balls is the number 1, on another is the…
A:
Q: At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…
A:
Q: Researcher Olivia wants to study the relationship between regular exercise and healt outcomes…
A: It is required to identify the option that best describes the study.
Q: 1) Let P and P, be the proportions of all users of Toothpastes A and B, respectively, who will never…
A: It is given that For toothpaste A, sample size n1 = 500, X1 = 100 For toothpaste B, sample size n2 =…
Q: A company manager wants to compare the satisfaction levels of his customers from two stores…
A:
Q: thought to be effective in treating depression. The researchers want to compare the new drug with…
A:
Q: 12:35. Three groups of children contain respectively 3 girls and 1 boy; 2 girls and 2 boys; 1 girl…
A:
Q: Given P(A) = 0.20, P(B) = 0.27, and P(B|A) = 0.20, are A and B independent or dependent? %3D O 1)…
A: The solution is given as follows
Q: A physician wants to determine if a supplement is effective in helping men lose weight. She takes a…
A: It is given that the sample size (n) is 6 and the hypothesized test is left- tailed. The level of…
Q: l study, a random sample of 540 participants agree to have their blood drawn, which is to be…
A: The random variable X which represents the number of samples out of the 10 who have these…
Q: When the health dept. tested private wells in a county for 2 impurities commonly found in drinking…
A: Consider the event, I = Impuritries From the given information, P(not I) = 0.20 P(IA) = 0.30 P(IB) =…
Q: (1) There is an equal number of red and blue marbles (H0), or (2) 60% of the marbles are blue (HA)…
A: To solve this problem, we can use the concept of conditional probability and apply it to each…
Q: e were 107 patients in the study. A random sample of 55 of these patients were placed in the…
A:
Q: Chpt 4, Q5: what is the correct answer for all the parts to this question In a study of the…
A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks The difference of…
Q: The problem is "Twelve percent of the job applicants for a large company have recently smoked…
A: Let M be the event that shows applicant having (smoked) marijuana.C be the event that shows…
Q: (Problem for Questions 20- 23). In a study focusing on student's achievement. 100 students were…
A: The objective is to state the hypothesis of the test based on studying the student's achievement of…
Q: Suppose Connie owns a pet store in a large community that has over 50,000 pet owners. She believes…
A: Given that Sample sizes n1 =420 , n2=493 Favorable cases x1=234 , x2=256
Q: Suppose you have two boxes A and B. Box A contains 7 black marbles, 4 white marbles. Box B contains…
A: Hi, Thank you for posting the questions. As you have posted more than one question and your first…
Q: 1)Given P (A) = 0.25 and P (AU B)= 0.50. What must P (B) be if A and B are to be independent?
A: As per guideline expert have to answer first question only.
Q: 6. if the scores of samples of students are 11 12 10 11 16 11 15 then mode is: (a)15 (b)11 (c)10
A: Sample is a subset of elements of a population and random sample is selecting the elements randomly…
Q: A buyer for a grocery chain inspects large truckloads of apples to determine the proportion p of…
A: Given sample n=50 apples population N=20,000 apples Hypothesis: H0: p=0.06H1: p<0.06
Q: Question 1 There are two boxes the first box contains 3 red beads and the second box contains 2 red…
A: Let X be the the no of red beads from the 2nd box. We have to find the probability distribution,…
Q: Suppose that a scientist is interested in determining if the proportion of females who prefer Diet…
A: Two sample Z test of proportions is the test to determine whether the two populations differ…
Q: For a short test of ten multiple-choice questions, each question has four possibilities, one of…
A: The given information is that a short test of 10 multiple choice questions and there are four…
Q: Your friend thinks that there is a preference in what kind of Coke people drink, depending on its…
A: In the given case the hypothesis that is to be tested is as follows H0:p=0.5H1:p<0.5 Where p is…
Q: In a study of the effects of mediation on anxiety, participants were randomly assigned to either…
A: Answer:- Given, A study of the effects of mediation on anxiety, participants were randomly assigned…
Q: A cell phone manufacturing company claims that their phone batteries last up to 48 hours without a…
A: Given that A cell phone manufacturing company claims that their phone batteries last up to 48 hours…
Q: A Survey was conducted of newlyweds in a country who have a spouse of a different race or ethnicity…
A:
Q: For each problem, show all work and explain your reasoning.1. Suppose a survey is conducted among…
A: The problem is asking us to calculate conditional probabilities based on the given survey results.…
Q: An executive is managing 3 projects. Consider the following experiment: For each project, observe…
A: Given that Ai be the event that the ith project is completed on time, where i = 1, 2, 3. 1) In the…
Q: Given P(A) = 0.20, P(B) = 0.27, and P(B|A) = 0.20, are A and B independent or dependent? %3D %3D %3D…
A: Given that P(A)=0.2 P(B)=0.27 To fidn the a A and B are independent or dependent
Q: Data from a study of two air lines fly to Small Town Flights on Time Flights Late Podunk…
A: Given the table from a study of two airlines fly to Small Town as follows: Flights on Time…
Q: Which of the following pair of hypotheses is appropriate for testing if the proportion of high…
A: Given: Population proportion P = 0.69 Sample size n = 30 Number of favourable X = 17 Formula Used:…
Q: Sometimes experiments involving success or failure responses are run in a paired or before/after…
A: Solutiona. State the two hypotheses of interest in terms of p1, p2, p3, and p4.Null Hypothesis (H0):…
Q: Your friend and you are playing an innocent game of rock-paper-scissors. To play it honestly, the…
A: The method of probability is used in many domains of statistics and mathematics.
Q: that time of year again at Isaac’s Fireworks Store! New Year’s! Sale! Sale! Sale! However, Isaac is…
A:
Q: salesman for a new manufacturer of cellular phones claims not only that they cost the retailer less…
A:
Q: 21a. Step 1: Which of the following is the correct set of hypotheses?A. H0: Cravings and relapse are…
A: 21a) The null and alternative hypotheses are: H0: Cravings and relapse are independent;
Q: A cabinet has three drawers. In the first drawer there are 5 gold balls. In the second drawer there…
A: I did my best to help you with this. If you find my efforts and answers helpful, (^-^) Please help…
Q: Question 1 There are two boxes the first box contains 3 red beads and the second box contains 2 red…
A: Probability of an event is the chances of occurrence of the event which lies between 0 and 1. The…
Step by step
Solved in 2 steps with 2 images
- I need IV V VIA random group of customers at a fast food chain were asked whether they preferred hamburgers, chicken sandwiches, or fish sandwiches. The restaurant's marketing department claims that 45% of customers prefer hamburgers, 45% of the customers prefer chicken sandwiches, and 10% of the customers prefer fish sandwiches. Is there evidence to reject this hypothesis at = 0.05? Plans Hamburgers Chicken Fish Number of students 34 18 8 Group of answer choices A. There is evidence to reject the claim that the customers' preferences are distributed as claimed because the test value 17.2> 5.481 B. There is not evidence to conclude the claim that the customers' preferences are distributed as claimed because the test value 5.481 < 7.815 C. There is not evidence to reject the claim that the customers' preferences are distributed as claimed because the test value 5.481 < 5.991 D. There is evidence to conclude the claim that the customers' preferences are…Suppose there are three balls in a box. On one of the balls is the number 1, on another is the number 2, and on the third is the number 3. You select two balls at random and without replacement from the box and note the two numbers observed. The sample space S consists of the three equally likely outcomes {(1, 2), (1, 3), (2, 3)} (disregarding order). Let X be the sum of the two balls selected. Which of the following is the correct distribution for X?
- Let A and B be the two possible outcomes of an experiment and suppose P(A) = 0.4, P(AUB) = 0.7 And P(B) = P. (i) For what choice of p are A and B mutually exclusive? (ii) For what choice of p are A and B independent?I need help with all parts of this question 21, For B the first option is is or is notthe second option is sufficent or insufficient and the third options is equal sign, plus minus or greater or less thanDuring one month, a blood donation center found that 45.5% of the donors had the A antigen. 14.5% of the donors had the B antigen. 4.6% of the donors had the A antigen and the B antigen. 84.6% of the donors were Rh+. 87.8% of the donors had the B antigen or were Rh+. (a) Find the percent of donors that have the A antigen or the B antigen. 55.4 % (b) Find the percent of donors that have the B antigen and are Rh+. ?
- Question 10: give the conclusion.A researcher wants to determine whether adolescents spend more time in a day around friends than adults do. He gathers a sample of n =10 adolescents (aged 12-17) and a sample of n =6 adults (aged 25-32). The researcher finds that the average time spent around friends for adolescents is M1= 3 hours with a SS1 of 44. He also finds that the average time spent around friends for adults is M2= 2 hours with a SS2 of 40. a. Do you use a one- or two-tailed test? What is the critical/cut-off t value with an alpha level of α = .01? b. What is the variance? c. What is the estimated standard error? d. What is the value of the t statistic? e. Do we reject or fail to reject the null hypothesis (α = .01)? Why? f. Calculate and report the variance explained ( r2)Step 1: Write down your null and alternative hypotheses. Use p1 to represent the proportion of the population who preferred Brand 1 over the other two brands, and p2 to represent the population proportion for Brand 2 and p3 for Brand 3. H0: Ha: Group of answer choices Null: There is a preference for one or more brands, that is p’s are not all equal. Alternative: There is no brand preference, that is p1 = p2 = p3 = 1/3; Null: There is no brand preference, that is p’s are not all equal. Alternative: There is a preference for one or more brands, that is p1 = p2 = p3 = 1/3; Null: There is no brand preference, that is p1 = p2 = p3 = 1/3; Alternative: there is a preference for one or more brands, that is p’s are not all equal. Null: There is a preference for one or more brands, that is p1 = p2 = p3 = 1/3; Alternative: There is no brand preference, that is p’s are not all equal.
- B. 3R+6B SR+4B PCR) = ? %3D P (B)= ? P( BilR)=? PC Bi |B)=? P ( Bzl R)=} P (Bz| B)= ? 2. If there are two Bqqs B, and Bz. In Bag bage one there are 3 red balls and 6 Blue bells. In Bag two there are 5 red balls andA blue balle. If One ball is Chosen at random. find the following trobubilities !7. A new drug study was conducted by a drug company. In the study, 10 people were chosen at random to take Vitamin X for 3 months and then have their cholesterol levels checked. In addition, 10 different people were randomly chosen to take Vitamin Y for 3 months and then have their cholesterol levels checked. All 20 people had cholesterol levels between 8 and 10 before taking one of the vitamins. The drug company wanted to see which of the 2 vitamins had the greatest impact on lowering people's cholesterol. The following data was collected: Vitamin X 7.27.5 5.2 6.5 7.7 10 6.47.6 7.77.8 Vitamin Y 4.8 4.44.5 5.1 6.5 8.03.1 4.6 5.2 6.1 (a) Draw a box-and-whisker plot for both sets of data on the same number line. (b) Use the double box-and-whisker plots to compare the 2 vitamins and provide a conclusion for the drug company. (e) State the skewness of both distributions and justify your answer.Q7. A survey was conducted in which 100 males and, independently, 100 females were asked about their respective methods of transportation to work. Participants were asked whether they typically drive to work, use public transportation, or walk / bicycle. The results are given in the table below. Can the investigators conclude that males differ from females in their work commute tendencies? Show your work. Drive Public Transportation Walk or Bicycle 22 Females 71 7 Males 76 18 6 (a) Based on the assumption that female and male tendencies are alike, construct a table of expected frequencies. (b) Use a X² test to evaluate the assumption used in part a. Make sure you indicate which test you are using! (c) Interpret the result of part b in terms of the situation of the problem, without using any statistical language.
