(b) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical value.

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A: Here use sampling distribution of sample mean as normal distribution as population normally distribu...

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A: Given that  Sample size n =30 90 % confidence interval is (40 , 55)

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A: here use basic probability  

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A: Here Given  Total no of teaching assistants=15 No of question =4 

Q: what is the median?. (b)what is the mode?. (c) What is the standard deviation for this sample.

A: Here ascending order of given data    60, 62, 64, 65, 71, 73, 74, 78, 83, 84, 84, 85, 87, 89, 91, 92...

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Q: ​(a) Construct a binomial probability distribution with the given parameters

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A: We have given that,  The data set is,  199, 169, 385, 329, 269, 149, 135, 249, 299, 249 standard dev...

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A: Note: As per our policy we can answer only three sub parts. kindly repost the remaining sub parts. G...

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A:

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 255.7 a...

A: Here mean is 255.7 and standard deviation is 60.8. We will use z-standard normal distribution.

Q: Lecture(10.3c): Identify the test statistic used for  the ANOVA procedure  and how it is calculated...

A: We want to tell you which one is the correct choice

Q: Suppose X-N(=10,0=3). Find P(X<5.7). Round you answer to 3 decimal places. 0.660 0.076 O 0.924 O 0.3...

A: Given that.   X~N( μ , ?^2 )   μ=10     , ?=3   Z-score =( x - μ )/?

Q: Previously, 12.1% of workers had a travel time to work of more than 60 minutes. An urban economist b...

A: Given that  Sample size n =80 Population proportion p=38%=12.1%=0.121  

Q: PROBLEM 1 The following are weights in pounds of 57 children at a day-care center. 68 63 42 27 30 36...

A: Solution: n= 57 observation. Here we need to create stem and leaf plot.   

Q: ported the mean hourly wage rate for individuals in executive, pations is $26. Assume the population...

A: Given

Q: Find each of the following percentile points under the normal curve. Show complete solution (not exc...

A: Solution

Q: The mean of the numbers x1, X2, X3 ... Xg is 9. If the mean of x2, X3, X6, X7, Xg is 10, find the me...

A: Here use formula of mean

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A: For the given data Which hypothesis is the claim ?

Q: For a standard normal distribution, find: P(-1.97 < z< 1.98)

A: We have to find given z score area.   Here we use z table for finding z score values... 

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A:

Q: The recidivism rate for convicted sex offenders is 11%.  A warden suspects that this percent is lowe...

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Q: Consider the following piecewise-defined function. S-2r2 +x-2 if x < 1 f(x) = 1-4x + 7 if x 2 3 Step...

A:

Q: The table below shows the color and the model of cars purchased by 160 randomly selected customers a...

A: Degree of freedom =(row-1)(coloumn -1) =(3-1)(2-1) =2  

Q: Determine the required value of the missing probability to make the distribution a discrete probabil...

A: Let X be the random variable having probability mass function is,  X P(X)  3 0.31 4 ?  5 0....

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A: When population standard deviations σ known then we use Z test statistic    

Q: A bottled water company has found in the past that 2% of their bottled water does not meet the compa...

A: Given that  n=12  , p=2%=0.02 , q=1-p=1-0.02=0.98 X~Binomial(n=12,p=0.02) X=Number of bottles that d...

Q: who use their own cups when they purchase a coffee beverage, and the proportion of customers who use...

A: Given that  Sample sizes n1=50 , n2=50 Favorable cases x1=24 , x2=18 99%confidence interval.   

Q: A random sample of forty-one 200-meter swims has a mean time of 3.875 minutes. The population standa...

A: Confidence interval formula  95% C.I = (  x̄     ±     Zc× ?/√(n) )

Q: What is the correct definition of interaction? O Interaction is the difference in p-value for two fa...

A: Interaction occurs when 2 or more independent variables have an effect on the dependent variable.

Q: Note: Please be sure to show relevant work for this please and thank you.  Use the following inform...

A:

Q: Calculate S S= 0.376 (Round to three decimal places as needed.) (d) Find the standardized test stati...

A: Given that  Sample size n =6 And already calculated  Difference of mean d- =0.917 Sd=0.376

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Q: Independent random samples taken on two university campuses revealed the following information conce...

A: For the given data What is your conclusion? Let α = 0.02. Choose the correct one.   

Q: A group of adult males has foot lengths with a mean of 27.39 cm and a standard deviation of 1.21 cm....

A: Given that mean =27.39 ,s.d =1.21

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A: From the given data test statistic =?

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A: here total number are 36 even numbers are 2,4,6,8...34  So we bet on Even numbers   NOTE-AS PER POLI...

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A:   Note: According to Bartleby expert guidelines, we can answer only first question with their three ...

Q: P-value = .123 (Round to three decimal places as needed.) Interpret the results. Since the P-value i...

A: We have given that the hypothesis testing for proportion p.

Q: The u.s. Bureau of labor statistics reported the mean hourly wage rate for individuals in executive,...

A: Given that mu =26 ,sigma =4,n =115 p( x bar &gt; 27 ) =?

Q: Question V: Test for difference between population means: popu- lation standard deviations are assum...

A: There are two independent samples which are Type One and Type Two. We have to test whether the type ...

Q: Fourteen different second-year medical students at a hospital measured the blood pressure of the sam...

A: Five number summary is.  Minimum  Quartile Q1 Median Q2 Quartile Q3 Maximum 

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Q: Given the probability density function f(x) = over the interval [2, 6], find the expected value, the...

A: Solution-: Let, X- be the random variable Given density function is pdf of uniform distribution with...

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Q: Suppose X-N(u=0,0=0.5). Find P(X> 0.33). Round you answer to 3 decimal places. O 0.382 O 0.745 0.618...

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Q: Find the area under the normal curve in each of the following cases. First Draw the normal curve the...

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Q: ... Since the z score for the male is z= |and the z score for the female is z= ], the has the weight...

A: