An article in the San Jose Mercury News stated that students in the California state university system take 4.5 years, on average, to finish their undergraduate degrees. Suppose you believe that the mean time is longer. You conduct a survey of 49 students and obtain a sample mean of 5.1 with a sample standard deviation of 1.2. Do the data support your claim at the 1% level? Solve the following problems using the steps in conducting hypothesis tests.

Q: 3. The weights of babies who were given two types of diets were recorded as follows: Diet A Diet B…

A: Given that x1=5.80x2=5.73 s1 =1.04 s2 =1.13 n1 =14 n2=14 l.o.s.=α=0.05

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A: For the given data Perform paired t test

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A: Given that mean = 32,s.d =8,n =40 , x bar = 30.2

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Q: Economics A USA Today/CNN/Gallup survey of 363 working parents found 204 who said they spend too…

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A: Given Mean, μ =2.56 Standard deviation, σ = 0.43 Z -score = X-μσ

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Q: 3. The average consumption of rice that a rural male adult person in a year is 70 kilos. If 25 rural…

A: Ans# Here X ~ N( μ, σ)          Where  μ = 70   and σ = 112,       sample size n = 25         Find…

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Q: Question 28 [Questions 27 - 28] Determine how various attributes impact the purchase of a car. There…

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A: Given information: The information about music for plants is given.

Q: 7 Example 2 (a). Show that the sample of 1/0 for distribution. mean x is an unbiased estimator

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Q: Table 1 69 85 102 70 86 104 70 105 75 105 82 106 What is the percentile for 86? Find the 2nd…

A: Arrange given data in ascending order 22,23,24,28,30,33,33,35,36,36 37,38,41,42,49,53,53,54,54,56…

Q: 9.12. (a) Are independent random processes orthogonal? Explain. (b) Are orthogonal random processes…

A: Orthogonal random processes have E(XY)=0. Independent random processes have E(XY)=E(X)E(Y) and…

Q: Is there enough evidence at =α0.01 to support his claim? Assume that the variable is normally…

A: We have given that  Sample mean = 6.2 Population mean = 7 Population standard deviation = 1.5 Sample…

Q: 1. The leader of the association of jeepney drivers claimed that the average daily take home pay of…

A: Given: Population sd,σ=3.75Sample size, n=80Sample mean, x¯=550α=0.05

Q: Suppose Z follows the standard normal distribution. Calculate the following probabilities using the…

A: For the given data Find all the required

Q: 9. Show that if t is a consistent estimator of 0, then t is a consistent estimator of e.

A:

Q: Product Name Product ID Quantity Cost Milk МО01 10 340 Bread B987 23 450 Coffee CF0003 20 230 Tea…

A: Descriptive statistics are summarized statistics of any data set.

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A: T test is the type of parametric test and hence it follows the assumption of normality. It used when…

Q: (a) Find the p-value for each of the following hypothesis test. H. :µ= 46 H :µ + 46 for n=40, x=…

A: Solution-: (a) Given: μ0=46,n=40,x¯=49.60,s=9.7 Find p-value? (b) Given: μ0=18,n=20,x¯=22.5,s=8,…

Q: Gini coefficient is a statistic used to measure income inequality within nations. It ranges from 0…

A: Gini coefficient is a statistic used to measure income inequality within nations. It ranges from 0…

Q: LOnduet a fun hypothesis testing on the following problem and then choose among the options what…

A: Given, Population mean, μ = 750000 Sample size, n = 35 Sample mean, X= 680000 Sample standard…

Q: 2. Here is a chart of blood pressure (in millimetres of mercury, mmHg) for a group of students:

A: Given that

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A: Given, Mean = 31.8 Margin of error = 1.54

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A: For the given data, let us construct a frequency distribution table. Number of classes=6Class…

Q: A random sample of 30 students had a final exam average of 86 with a standard deviation of 2 points.…

A:

Q: Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics…

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A: Given,sample size(n)=115population proportion(p^)=0.14

Q: The data show the yearly income (in $1000) and age of a sample of seven individuals.  Age  Income…

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Q: If the random variable X has uniform distribution on the interval [0, a], what is the probability…

A: Solution

Q: Problem Four: In a dental clinic with one dentist, the average number of patients from time to time…

A: Given Total number of patients per day =2

Q: Briefly describe a health-related situation in which you would want to use the t test for dependent…

A: Solution: It is needed to explain the paired t test using health related situation.

Q: Conduct a full hypothesis testing on the following problem and then choose among the options what…

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Q: A store manager gathers some demographic information from the store's customers. The following chart…

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Q: Q4/ The variance of the frequency distribution is 47 70 87 45 17 33 90 57 72 65 69 35 49 40 10 22 29…

A:

Q: out the effects of increasing the length of advertisements from 30 seconds to one minutes conducts a…

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A: Given: Sample size,n=50Sample mean, x¯=0.46Sample sd. s=0.36α=0.05

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A: The objective is to find a decision based on the computed and critical value.

Q: A magazine collected the ratings for food, decor, service and the cost per person for a sample of 96…

A: Obtain the predicted value of Y when X equals 52. The predicted the value of Y when X equals 52 is…