3. About 68% of the students at Fairview Community College favor a new policy regarding parking on campus. Suppose we are interested in the proportion of 65 students in a mathematics class who favor the policy. (a) Is the normal approximation to the proportion p^= r/n valid? Explain. (b) What is the probability that the proportion of the class who favor the policy is at least two fifths? (c) What is the probability that the proportion of the class who favor the policy is no more than 70%?
Q: What is the probability that the number of systems sold is more than 2 standard deviations from the…
A:
Q: Suppose that, in fact, the total cholesterol level of all men aged 20–34 follows the Normal…
A:
Q: Supposed that the mean age of the employees of warrior's corporation is 45.5 years and the standard…
A:
Q: Suppose that the average outstanding credit card balance for young professionals is Php11,200 with a…
A: Given: Population meanμ=11200Population standard deviationσ=2600Sample size(n)=150
Q: About 71% of all female heart transplant patients will survive for at least 3 years. Eighty female…
A: Given Data population proportion,p = 0.71 sample size n = 80
Q: The mean production of workers in a certain factory is 10 products per hour with a standard…
A: Let production of workers in a certain factory = X μ = 10 σ = 1.5 X ~ N(10, 1.52)
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A:
Q: The standard deviation of monthly rents paid by students in a particular city is assumed to be $ 60.…
A: Given, σ = 60 n = 150 we have to find 1. P( x- < μ + 8 ) 2. P ( x- < μ - 6 ) where, Z =…
Q: 11). Describe the other method that you use for finding probabilities (area under the normal curve).…
A: pleasesee below
Q: Suppose the age a student graduates from Salem State is Normally distributed. If the mean age…
A: Given, mean = 23.1 Standard deviation = 3.1 We know, z = (x-mean)/std dev
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: GivenMean(μ)=53.9standard deviation(σ)=1
Q: doctor is interested in the proportion of patients which live at least 5 years after being diagnosed…
A:
Q: Suppose that the average outstanding credit card balance for young professionals is Php11,200 with…
A: Given : Mean = μ = 11200 Standard deviation = σ = 2600 Sample size = n = 150
Q: A manufacturing company operates a particular machine 200,000 times per year. In the first 2 years…
A: Given information: It is given that a manufacturing company operates a particular machine 200,000…
Q: se that the birth weight of children follows a normal distribution with a mean of 3.0 kg and…
A: Given: μ=3.0, σ=0.5 The corresponding z-value is calculated as: The probability that the sample…
Q: A recent report by the MLB shows that a typical family of four spends $490 to watch a professional…
A: Given Information: Let the random variable X denotes the attending a game in person. X has normal…
Q: The psychomotor retardation scores of 1500 manic-depressive patients were found to be normally…
A: The population size is n=64 The mean is μ=930 The standard deviation is σ=130 The probability that…
Q: Suppose that the average outstanding credit card balance for young professionals is Php11,200 with…
A:
Q: A recording firm wants the distribution of lengths of cuts on its playlists to have an average of…
A: Let X be the distribution of lengths of cuts on its playlists. Given mean, μ = 135 sec Standard…
Q: A study shows that the intelligence quotient (IQ) of adults in a country follows a normal…
A:
Q: Suppose that the average outstanding credit card balance for young professionals is Php 11,200 with…
A: The average outstanding credit card balance for young professionals is Php 11,200. The standard…
Q: 3. Teacher Annie commutes to school everyday with an average travel time of 45 minutes with standard…
A:
Q: Suppose that the birth weight of children follows a normal distribution with a mean of 3.0 kg and…
A:
Q: of United States of Heightlandia, the height measurements of ten-year-old children are approximately…
A: Given: μ=56.2, σ=1.7 The corresponding z-values can be calculated as: The probability that the…
Q: The shape of the distribution of the time required to get an oil change at a 20 minute oil change…
A: The provided information is, µ=21.6 s=4.6 n=40
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: Given,mean(μ)=56.4standard deviation(σ)=4.2
Q: I don't understand how to solve this
A: It is given that the proportion of all female heart transplant patients will survive for at least 3…
Q: The average time to recycle an e-waste is between 18 to 42 minutes following a uniform distribution.…
A:
Q: Suppose that the average outstanding credit card balance for young professionals is Php11,200 with…
A: μ = 11200δ = 2600n = 150here n ≥ 30∴ As per cCLT , x will normal.
Q: In a family with 2 children, the probability that all the children are girls is approximately 0.25.…
A: Givenn=1000p=0.25x~Binomial(n=1000,p=0.25)P(X=x)=(nx)×px×(1-p)n-x x=0,1,...,n
Q: About 71% of all female heart transplant patients will survive for at least 3 years. Eighty female…
A:
Q: a.) What probability (in percentage) of students scores are less than 49 on the exam?
A: Given: chemistry exam score = X X follows a normal distribution with mean of 60 and a standard…
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: Let "X" be the height measurements of ten-year-old children. Since the question requires more…
Q: Suppose that you have a large number of potatoes. The mean weight of the potatoes is 7.4 ounces with…
A:
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: Here the heights are normally distributed with mean 56.9 and SD=7. We need P(60.7<X<64.2).
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: Given X~N(μ,σ)μ=55.6σ=7.2
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A:
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A:
Q: Suppose the weight of watermelons produced in Adana follows the normal distribution with mean 7.2 kg…
A: It is given that the weight of watermelons follows normal distribution with mean µ as 7.2 kg and…
Q: The sardines processed by a cannery have a mean of 4.54 inches with a standard deviation of 0.635 cm…
A:
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: Given data, μ=53σ=3.4P(46.6<X<53.7)=?
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: Given that the mean is 56.1 and standard deviation is 1.8 inches.
Q: What is the probability that more than 4 accidents will occur within any given year at an…
A:
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: Suppose that you have a large number of potatoes. The mean weight of the potatoes is 7.4 ounces with…
A: Solution
Q: A population of 2,800 students from a certain region have normally distributed National Examination…
A: Given,sample size(n)=35mean(μ)=89standard deviation(σ)=5
Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…
A: We have to find the probability that a randomly chosen child has a height of less than 59.4 inches.
Q: At a certain college, the time that is required by students to complete the mathematics competency…
A:
Q: In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were…
A: It is given that n =500 and p =0.81.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 2 images
- The researcher hypothesizes that partners' attitudes are significantly related to each other. Test the typothesis with a coffelation and with out your conclusion. Show your workSuppose a survey of 899 college students who were asked about their smoking behavior. Of the students surveyed, 262 classified themselves as nonsmokers, but said "yes" when asked later in the survey if they smoked. These students were classified as "phantom smokers," meaning that they did not view themselves as smokers even though they do smoke at times. The authors were interested in using these data to determine if there is convincing evidence that more than 25% of college students fall into the phantom smoker category. Suppose that the sample of 899 college students can be regarded as representative of college students in the United States. (a) What hypotheses would you test to answer the question posed? H0: p = 0.25 versus Ha: p ≠ 0.25 H0: p ≠ 0.25 versus Ha: p = 0.25 H0: p = 0.25 versus Ha: p > 0.25 H0: p < 0.25 versus Ha: p > 0.25 H0: p = 0.25 versus Ha: p < 0.25 (b) Is the sample size large enough for a large-sample test for a population…The Department of Statistics Malaysia (DOSM) conducted another study on the monthly gross income (in RM) in Malaysia for 2017. Another four states are selected and the data obtained are shown in Table 2. The Boxplot of the data is given in Figure 1. Based on Figure 1,(i) Determine the shape of the distribution of monthly gross income for Sarawak and Wilayah Persekutuan Kuala Lumpur (W.P.KL). (ii) Given that Q1 ≈ 4900 and Q3 ≈ 9900 , prove that there exist outlier for Wilayah PersekutuanKuala Lumpur (W.P.KL) as illustrated in the Figure 1. Show your calculations.
- A panel of dentists is interested in testing two different toothpaste brands (A and B) to see if there is a relationship between the brand and whether or not the patient has a cavity at their next appointment. A representative sample of 60 patients is recruited to take part in the study. At their first appointment of the year, each subject is assigned to brush their teeth with one of the two brands for the next six months. At their follow-up appointment six months later, they were checked for cavities. To test for significance of their findings, which of the following should the dentists use? Select one: a.Paired t-test b.One-sample t-test for a mean c.Linear Regression d.One-sample Z-test for a proportion e.Chi-Square test for independence f.Two-Sample t-test g.One-sample Z-test for a meanA data with 18 points will be integrated as accurately as possible using a combination of Simpson's rules. It will require ____ applications of Simpson's 3/8th rule and _____ applications of Simpson's 1/3rd ruleA researcher was interested in studying if there is a significant relationship between the severityof COVID 19 and blood types of individuals. 2400 individuals were studied and the results areshown below.Condition Blood TypeO A B AB TotalCritical 64 44 20 8 136Severe 175 129 50 15 369Moderate 211 528 151 125 1015Mild 200 400 140 140 880Total 650 1101 361 288 2400a. State both the null and alternative hypotheses. DONEb. Provide the decision rule for making this decision. Use an alpha level of 5%. DONEc. Show all of the work necessary to calculate the appropriate statistic. DONEd. What conclusion are you allowed to draw? DONEe. Would your conclusion change at the 10% level of significance? DONE... I need help with using JASP. pLEASE show me how to input the data f. Confirm test results in part (c) using JASP.
- A panel of dentists is interested in testing two different toothpaste brands (A and B) to see if there is a relationship between the brand and whether or not the patient has a cavity at their next appointment. A representative sample of 60 patients is recruited to take part in this study. At their first appointment of the year, each subject is assigned to brush their teeth with one of the two brands for the next six months. At their follow-up appointment six months later, they were checked for cavities. ******In the sample, 6 of the 30 patients assigned to Brand A were found to have a cavity. The fraction 6/30 should be denoted by which of the following? μ x̄ p p̂ n s σ χ²An article describes a survey of 2,096 adult Americans. Survey participants were asked if they were football fans and also if they agreed or disagreed that the rules that the National Football League adopted in 2010 designed to limit head injuries have been effective. Data from the survey are summarized in the table below. Agree Disagree Total Football Fan 673, 543, 1,216. Not a Football Fan 199, 681, 880. Total 872, 1,224, 2,096. Suppose that a survey participant is to be selected at random. Consider the following events. A = event selected participant agreed that the rules have been effective D = event selected participant disagreed that the rules have been effective F = event selected participant was a football fan (a) Calculate the following probabilities. (Round your answers to four decimal places.) (i) P(A) = (ii) P(D) = (iii) P(A|F) = (iv) P(A|FC) = (b) Are the events F and A independent events? Justify your answer using relevant probabilities. Yes, the events F and A are…Ariatnam, Najafi, and Morones (Journal of professional Issues in Engineering Education andPractice, 2002) describe an overview of academies in horizontal directional drilling conducted totrain engineers and inspector for the California Department of Transportation. A pretest wasadministered on the first day prior to any instruction. Instruction and field experience wereprovided over a 3 day period, followed by a final test administered at the end of the last day.Although the average final test score of 75.27% was higher than the average pretest score of55.61%, the difference was not significant.a. Identify the type of the study described here.b. What is the purpose of administering the pretest?
- A researcher wants to examine if sugar consumption has changed over the last 5 years . a. Select a group member's post and reply by stating the Type I and Type II error for that scenario. b. State whether their hypothesis is directional or non-directional.When determining whether grounding accidents and hull failures result in different spillage (is there a difference between spills caused by grounding or hull failures) would I use a two tail t test to decide this?Kentville, a community of 10,000 people, resides next to a krypton mine, and there is a concern that the emission from the krypton smelter have resulted in adverse effects. Specifically, Kryptonosis seems to have killed 12 of Kentville’s inhabitants last year. A neighboring community, Lanesburg, has 25,000 inhabitants and is far enough from the smelter to not be affected by the emission. In Lanesburg, only three people last year died of Kryptonosis. Given that the number of deaths in Kentville and their causes last year were: Heart attack=7 Accidents=4 Kryptonosis=12 Other=6 What is the risk of dying of Kryptonosis in Kentville relative to non-contaminated locality?What is the risk of dying of Kryptonosis in Kentville relative to deaths due to other causes? How many times the chance of dying of Kryptonosis compared to dying of accidents ? How many times the chance of dying of Kryptonosis compared to Other causes?