the average height of grade 10 students is 148 cm. a sample of 250 students had an average heigh of 148.3 cm with a standard deviation of 8 cm. Is there a significant difference between the height of the students? what is the computed value of z? if a =  0.01, what is the tabular value of z? (right tailed)? if a =  0.05, what is the tabular value of z? (right tailed)?

Q: 36% of the birds in Cititon Park are blue. What is the probability that, in a random sample of 67 bi...

A: We have given that  Sample size n =67 Success of probability p =36%=0.36  

Q: The joint probability distribution of two random variables X, Y is given in the table below. Y=-3 Y=...

A:

Q: Check Yourself! A. Compute the mean, variance, and standard deviation of the following situation. 1....

A: mean=E(X)=∑X.P(X)

Q: Do male and female servers at Swank Bar work the same number of hours? A sample of 75 female servers...

A: There are two independent samples which are female and male. We have to construct 96% confidence int...

Q: 3. Suppose that in a casino, a certain slot machine pays out an average of Php 15, with a standard d...

A: a. You may win much or nothing, as the range is wide. b. EX1= 20-15=5EX = E∑1≤i≤5 Xi = 5EX1= 5×5= 25...

Q: Construct all random samples consisting two observations from the given data. You are asked to guess...

A: Given: watermelon A B C D E F weight(in pounds) 19 14 15 9 10 17  

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey...

A: As per Bartleby guideline expert have to answer first question three subparts only dear student plea...

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

A: i. In this case, the bottled water company has found that 2% of their bottled water does not meet th...

Q: Use the ALEKS calculator to solve the following problems. (a) Consider a t distribution with 27 degr...

A:

Q: Two samples are taken with the following numbers of successes and sample sizes r1 = 40 r2 = 24 n1 = ...

A:

Q: Could you please help interpret this SPSS output? a) Determine the regression equation.

A:

Q: In the game of roulette, a player bets $5 on a number and has a 1/38 chance of winning. If he wins, ...

A:

Q: Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language...

A:

Q: You are testing the claim that the proportion of men who own cats is significantly different than th...

A:

Q: 6. The daily sales at the campus bookstore throughout the school year have a probability distributio...

A:

Q: You wish to test the following claim (Ha) at a significance level of α=0.001. For the context of thi...

A: For the given data perform paired t test

Q: Population by broad age groups in country A, 1990 & 2011 Country A 2011 Country A 1990 Both Age grou...

A: Hello thank you for the question, According to our honor code can answer only three sub parts at a t...

Q: The time that it takes for the next train to come follows a Uniform distribution with f(x)=135f(x)=1...

A:

Q: Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at t...

A: From the provided information,

Q: You wish to test the following claim (HaHa) at a significance level of α=0.005       Ho:μ1=μ2      ...

A: There are 2 independent samples which follows normal distribution. We have to test whether the first...

Q: A magazine conducts an annual survey in which readers rate their favorite cruise ship. All ships are...

A: Given data n1=38x1¯=85.62σ1=4.55And n2=44x2¯=81.10σ2=3.97  

Q: One question from a survey was "How many credit cards do you currently have?" The results of the sur...

A: Data :-  3 2 3 2 5 2 3 2 4 7 2 5 2 2 2 10 3 2 4 1 2 3 8 2 10 3 3 2 1 3 3 3 3 2 4 4 1 2 1 1 3 8 2 2 1...

Q: The amount of orange poured into 7 ounce cups by a filling machine varies from cup to cup, and it ca...

A:

Q: Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of three co...

A:

Q: (a) Approximately ? v of the students scored between 18 and 84. (b) Approximately 95% of the student...

A:

Q: Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 195, with a standard de...

A: For part 2 Given: μ=195σ=34n=103

Q: Situation 2: The running time (in minutes) of sample YouTube videos produced by a particular vlogger...

A:

Q: I want to assess whether or not a new drug meant to help with depression symptoms actually helps tho...

A: From the provided information, Sample size (n) = 10 Level of significance (α) = 0.05

Q: Find the probability and interpret the results. If convenient, use technology to find the probabilit...

A:

Q: C recently reported that the mean annual cost of auto insurance is 1017 dollars ion is 249 dollars, ...

A: Given data,Mean μ=1017Sd    σ=249n=37

Q: In a survey of 1000 drivers from Region A, 849 wear a seat belt. In a survey of 1000 drivers from Re...

A:

Q: 3. Answer the following concept questions in 1-3 sentences each. (a) Consider the sampling distribut...

A: Given Xi~N(75,25)Xi~N(75,25) n>30 Find  Do we need the central limit theorem  P(X¯<72) if our ...

Q: The mean useful life of car batteries is 55 months. They have a standard deviation of 2. Assume the ...

A:

Q: The life time of a printer head is assumed to follow normal distribution with mean 8 million charact...

A:

Q: Question 3  Suppose Andrew earns $45,000 EC per month. The average salary for everyone in Andrew’s c...

A: Given  Andrew earns $45,000 EC per month The average salary for everyone in Andrew’s company is $41,...

Q: Test the claim below about the mean of the differences for a population of paired data at the level ...

A:

Q: Test the claim about the difference between two population means u, and p2 at the level of significa...

A:

Q: Apparently it is a fact that 12% of people buy their pet a gift on Valentine’s Day. a) If you survey...

A: Given: 12% people buy Gift p=0.12

Q: A process that manufactures glass sheets is supposed to be calibrated so that the mean thickness μ o...

A: Given standard deviation of the sheetσ=0.23mm  true mean thickness is 4.04 mm Find  If 100 sheets ar...

Q: For each scenario listed on the left, determine whether the scenario represents an Independent Sampl...

A:

Q: Suppose that X, Y, and Z are jointly distributed random variables, that is, they are defined on the ...

A: Given that,  E(X) =-9 , E(Y) =-5, E(Z) =-1 Var(X) =3, Var(Y) =1, Var(Z) =34

Q: ks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IBjXwdcBrSoeeM9spwQ1BWSgePhiyVz2aFLo6VptYikm2d5A0r8-zR...

A:

Q: A random sample of size 20 is taken from a Binomial distribution for which n = 25 and the probabilit...

A: Solution-: Given: n=25, p=0.7 We find P(the sample mean less than18.1)=? 

Q: The customer service center in a large New York department store has determined that the amount of t...

A:

Q: Suppose in the trial described in Problem 8 that patients were recruited from three different clinic...

A:

Q: How can I describe and differentiate the properties of the different measures of location?

A: measures of location :-Measures of location describe the central tendency of the data.Different meas...

Q: The marginal distributions of two random variables X and Y, together with some values of their joint...

A: Solution-: We have following table:   Y=0 Y=1 Y=3 Total X=1   0.06   0.60 X=3   0.04   0.40 ...

Q: Suppose that the probability that a passenger will miss a flight is 0.0959. Airlines do not like fli...

A: Given that  Suppose that the probability that a passenger will miss a flight is 0.0959... flights be...

Q: The marks obtained by a group of students in a certain subject are assumed to be approximately norma...

A:

Q: For each of the following scenarios, indicate whether the relationship between the two variables is ...

A: The graph is given, we have to conclude whether the statement is true or false.