Five of a sample of 100 computers will be selected and tested How many ways are there to make this selection?
Q: sume that the majority of all auto workers favor a strike since the number sampled is large and…
A: Let p be the population proportion of autoworkers who declared they would strike.Given that,Sample…
Q: Chapter 6, Section 3-CI, Exercise 146 Public Libraries and Gender A survey1 asked a random…
A: Confidence interval : The following is the formula for confidence interval of difference between two…
Q: Maris wants to learn more about fine art. Select the option below that will result in Maris taking…
A: Maris wants to learn more about fine art. Select the option below that will result in Maris taking…
Q: b) Drivers were surveyed to determine their rest time taken at the Rest & Recreation (R&R) area when…
A: Given that, Drivers were surveyed to determine their rest time taken at the Rest & Recreation…
Q: Suppose a veterinarian wants to estimate the difference between the proportion of cat owners who are…
A: The random variable is difference between the proportion of cat owners and the proportion of dog…
Q: Students at the University of Alabama use the following modes of transportation: bike, car, and bus.…
A: Given: Students at the University of Alabama use the following modes of transportation: bike, car,…
Q: Four different glazes are applied at two different thicknesses to clay pots. The kiln used in the…
A:
Q: A physical therapist wants to know whether a new exercise regimen has an effect on the pulse rate of…
A: Solution: To test the hypothesis ' Ho: Median difference is zero Vs Ha: Median difference is…
Q: A researcher would like to use a factorial study to compare two programs designed to help people…
A: In a factorial design, there can be several factors. These factors can be classified as: 1…
Q: The supply department has 9 different electric motors and 4 different starting switches. In how many…
A: Given,no.of electric motors=9no.of starting switches=4
Q: In one of its Spring catalogs, a company advertised footwear on 34 of its 200 catalog pages. Suppose…
A: Given information: Given that a company advertised footwear on 34 of its 200 catalog pages. The…
Q: Many young men in North America and Europe (but not in Asia) tend to think they need more muscle to…
A: It is given that,Sample mean = 2.35.Population standard deviation, sigma is 2.5.The sample size, n…
Q: Draw a box-and-whisker plot for both sets of data on the same number line. Use the double…
A: Box plot is one of the chief methods to analyze a data graphically. It is used to compare how two…
Q: A researcher is interested in whether people will show different amounts of cognitive dissonance…
A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…
Q: eda county california compated the domographic characteristics of jurors with the general population…
A: Age County-wide percentage number of jurors expected number of jurors 21 to 40 42 5 41 to…
Q: 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a cat. If…
A: Given 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a…
Q: Suppose a certain virus (sorry!) affects 0.3% of the population. A test used to detect the virus is…
A: 0.3% of 100000 population have virus. 0.3*100000/100= 300 people have virus. 88% have virus and…
Q: Last year, 40% of the students at GGC were in the School of Business, 10% of the students were in…
A: Null and alternative hypotheses: Null hypothesis is a nullified statement about population parameter…
Q: A computer manufacturer is interested in comparing assembly times for two keyboard assembly…
A: The question is about hypo. testing Given : To find : Can it be conclude that the mean assemb.…
Q: Suppose you want to pick 7 people out of 20 people to take part in a psychology experiment. How many…
A:
Q: Training Program (number of sales) 1 78 3 4. 99 74 84 81 86 86 87 63 90 80 71 92 93 83 65 69 94 78…
A: There are 4 independent samples which are 4 training programs. We have to test whether there is a…
Q: In sociology, a personal network is defined as the people with whom you make frequent contact. A…
A:
Q: A local superstore sells a "forget me not pill" that is suppose to help recall. I find that some of…
A: In order to determine whether the forget me not pill improves memory or not, conduct a two mean…
Q: In a driver-side "star" scoring system for crash-testing new cars each crash-tested car is given a…
A: The table shows the drivstar, count and percent.
Q: Is this a valid experimental design?
A: Here student want to check fertilizer affect the plant growth
Q: Identify the test statistic that should be used for testing whether the average distance hit for the…
A: Test is that whether the average hit distance differs for the four brands of baseball bats.
Q: The California Department of Public Health
A: Total cases: 100 Total people : 7.5 million now, every person has an equal chance to having COVID:…
Q: Suppose that 46% of politicians are lawyers. If a simple random sample of 681 politicians is…
A: Answer Given The sample size [n] =681p=46%sample proportion =43%
Q: How many degrees of freedom do you have for a two-group T test? If you have 40 subjects in one group…
A: From the provided information, Sample size (n1) = 40 and n2 = 50
Q: ag contains 1 red, 1 black, and 1 green marble. I randomly select 1 of the marbles and record its…
A: We see that the bag contains 1 black, 1 red and 1 green marble. One marble is selected, the color is…
Q: In the Sanatorium For Acute Intellectual Malnutrition, a nourishing twelve course Christmas Exam is…
A: Given: n = 20 To find: The number of orphans who will on average end up without a test given that…
Q: A consumer products testing group is evaluating two competing brands of tires, Brand 1 and Brand 2.…
A: The question is about confidence interval.Given :To find :Construct confidence interval for .
Q: A box contains 10,000 tickets: 4,000 zeros and 6,000 ones. And 10,000 draws will be made at random…
A: As the draws are obtained without replacement, the population size decreases with each additional…
Q: Starting in 2000 and going through Hurricane Harvey in 2017, there have been 264 named storms in the…
A: It is important to note that there are only 264 possible outcomes. So the random number generated…
Q: Researchers conducted a study to find out if there is a difference in the use of online-learning by…
A: Null hypothesis: H0: P1=P2Alternate hypothesis: HA: P1≠P2 The significance level is 0.05 and the…
Q: A study contained four treatment conditions with n 5 participants in each group. What is the value…
A: Question 6: There are 4 treatment conditions with n=5 participants in each group.
Q: A random semple of n,144 people ages 16 to 19 werre takn from the land ef Oah, Ha, ndwere found to…
A: Note: Hi there! Thank you for posting the question. To avoid the plagiarism issue we have issued the…
Q: The ages (years) of three government officials when they died in office were 54, 45, and 61.…
A: Population is the set of all objects of interest. Sample is s subset of the population. It is not…
Q: Sleep researchers were trying to understand the impact of cell phone use before bedtime on the…
A:
Q: Recent surveys of college students suggest that 40% are liberal, 40% are middle-of-the-road (MOTR),…
A: Given recent surveys of college students suggest that 40% are liberal, 40% are middle-of-the-road…
Five of a sample of 100 computers will be selected and tested How many ways are there to make this selection?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- Suppose we have a set of 37 lightbulbs, and we wish to select a random sample of 5 distinct bulbs from this set. How many possible such samples exist? There are possible samples of this size.A bag of candy contains 5 different types of colored candies; red, green, blue, yellow, and orange. According to the manufacturer, bags should contain an equal number of each color. Students in a statistics class decided to use a chi-square procedure to test the manufacturer’s claim. They opened a bag of candy and recorded the number of candies of each color. The results are shown in the following table. Red Green Blue Yellow Orange 17 24 20 25 14 Which color contributes most to the chi-square test statistic? Red A Green B Blue C Yellow D OrangeIn a memory test, the test subjects are given a large number and are asked to memorize it. Historical records show that 80% of test subjects pass the test. To pass the test, a subject must exactly repeat all the digits in the number after two hours. A random sample of 625 people to take the memory test is going to be chosen. Let p be the proportion of people in the sample who pass the test. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of P. 0 (b) Find the standard deviation of p. 0 (c) Compute an approximation for P(P >0.84), which is the probability that more than 84% of the people in the sample pass the test. Round your answer to four decimal places. 0 X
- A report describes a survey of 251 adult Americans. Participants in the survey were asked how often they disinfect their phone and were asked to respond with one of the following categories: more than once a week, once a week, every other, week, every three weeks, or less often than every three weeks. For this group, 9% responded more than once a week, 52% responded once a week, 26% responded every other week, 6% responded every three weeks, and 7% responded less often than every three weeks. Fill in the table below with the relative frequency distributions. How Often? Relative Frequency More than once a week Once a week Every other week Every three weeks Less often than every three weeksQuestion 3 To compare three brands of computer keyboards, 4 data entry specialists were randomly selected. Each specialist used all three keyboards to enter the same kind of text material for 10 minutes, and the number of words entered per minute was recorded. SST, SSB, and SSE can be calculated to be 392.6667, 143.5833, and 2.6667, respectively. When you make a pairwise comparison between Brand A and Brand B, what is 95% Tukey Confidence interval? (Consider tables below) Keyboard Brand Specialist A B C 1 177 67 63 2 71 62 59 3 74 63 59 67 57 54 Summary Count Sum Average Variance 3 207 69 52 3 192 64 39 3 196 65,33333 60,33333| 3 178 59,33333 46,33333 14 289 72,25 18,25 249 62,25 16,91667 235 58,75 13,58333 df MS F P-value F critical SS 143,5833 3 47,86111 107,6875 1,32E-05 4,757063 392,66672 196,3333 441,75 3,07E-07 5,143253 2,6666676 0,444444 538,9167 11 4 1 2 3 14 A B C ANOVA Source of Variation Specialist Brand Error Total 4 4Suppose a university wishes to compare the effectiveness of four learning modalities (Face-to-Face, Online, Blended, Course Learning Module) for a particular course. Twenty-four students are randomly assigned to the learning modalities, with 7, 6, 6 and 5 respectively. At the end of course, a test (out of 50) was given and the performance of the students were recorded as follows: Online Blended 30 CLM 25 Face-to-Face 23 20 28 23 30 15 35 28 15 15 18 28 33 20 25 23 25 33 28 40 25 18 What statistical test is appropriate for the given data? Select the correct response.: O One-Way ANOVA one-sample t- test O z-test O two samples t-test
- A researcher uses an anonymous survey to investigate the study habits of American college students. The entire group of American college students is an example of a(n)2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:A Statistics instructor wishes to know the average age (in month) of his 200 students. He decides to choose 25 students from the class and ask them for their age. All 200 names are put in a hat and 25 names are then chosen at random (without replacement). The average age of the students chosen is observed to be 231 months. The group of 25 students is known as what?
- Itranscript One male and one female dam rat pup were randomly selected from 8 litters to perform the swim maze. Each pup was placed in the water at one end of the maze and allowed to swim until it escaped at the opposite end. If the pup failed to escape after a certain period of time, it was placed at the beginning of the maze and given another chance. The experiment was repeated until each pup accomplished three successful escapes. The table to the right reports the number of swims required by each pup. Is there sufficient evidence of a difference between the mean number of swims required by male and female pups? Use a=0.01. Comment on the assumptions required for the test to be valid. B. t> Litter 1 2 3 OC. t 10 12 Female 11 [6526675 10A person, Joe, claims to be able to "smell" an illness based on the odor of a person's clothing. Joe is given 12 shirts, each worn by a different person, some of whom had the illness and some of whom did not. The shirts were given to Joe in random order and he had to decide whether each shirt had been worn by an ill patient or by a healthy patient. joe identified 11 of the 12 shirts correctly. If we assume that Joe was just guessing, he would have probability 1/2 of correctly identifying each shirt. Find the probability that Joe would identify AT LEAST 11 shirts correctly by random guessingSWIMMER’S FLEXIBILITY STUDY Swimming requires complete body movement as defined in sports science. A swimmer’s flexibility helps in his/her movement in water, thus making him/her a faster swimmer. In a study conducted to determine if there is an improvement in swim speed after doing flexibility exercise, 15 swimmers of the same characteristics were randomly selected. They were asked to do a 25-m freestyle and their swim speed (in seconds) were recorded. After this, a flexibility exercise was done. All the swimmers were then asked to do another 25-m freestyle and their swim speed (in seconds) were also recorded. The data collected are given below and can also be found in the worksheet “swim_speed”of excel file “exer3_data.xlsx”. R outputs can be found in the file “exer3_outputs.pdf”.(Use before – after in your computations Swimmer 1 2 3 4 5 6 7 8 Before 16.87 19.42 20.04 22.82 24.24 17.76 23.91 17.17 After 15.82 18.47 20.43 21.76 23.88 18.12 20.96 16.03 Swimmer 9 10 11 12…
