Find the minimum sample size needed to estimate u for the given values of c, standard deviation, and E. c=0.98, standard deviation =6.9 and E=2. Assume that a preliminary sample has at least 30 members. n= ? Round to the nearst whole number.

Q: Use technology and a t-test to test the claim about the population mean u at the given level of sign...

A:

Q: a. Determine the value of ‘***’? b. Explain what is meant by Sampling Distribution of the Mean in t...

A: Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly rep...

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the ind...

A: Given that. 1) X~N( μ , ?^2 )   μ=8    , ?=2   Z-score =( x - μ )/?   NOTE:- According to bartleby g...

Q: In a previous nationwide poll of a large country, 45% of adults with children under the age of 18 re...

A: The random variable X follows normal distribution. We have to test whether the proportion of familie...

Q: A random sample of 12 second-year university students enrolled in a business statistics course was d...

A: Solution: Given information: n= 12 Sample size  μ= 60 Population mean σ= 8 Population standard devia...

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: A company is doing a hypothesis test on the variation of quality from two suppliers. Both distributi...

A:

Q: Compute the mean, variance, and standard error of the sampling distribution of the sample means give...

A:

Q: A credit card company claims that the mean credit card debt for individuals is greater than $5,200. ...

A:

Q: The following data give the percentage of women working in five companies in the retail and trade in...

A: For the given data a. Develop the estimated regression equation by computing the values b0 and b1 b....

Q: A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is ...

A:

Q: Several years ago, 38% of parents with children in grades K-12 were satisfied with the quality of ed...

A: Given that  n=1205 , X=454 , p=38%=0.38  

Q: Among a random sample of 400 college students, the mean number of hours worked per week at non-colle...

A:

Q: A popular weight loss program claims users will lose weight each month. Linda samples 25 dieters and...

A: We have given that,  Sample mean (x̄) = 10 pounds, standard deviation (s) = 2 pounds and sample size...

Q: standard deck of 52 cards has 4 suits (Each has 13 cards: Ace, 2, 3,..., 10, Jack, Queen, and King):...

A: Given that ; A standard deck of 52 cards has 4 suits (Each has 13 cards: Ace, 2, 3,..., 10, Jack, Qu...

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

A: The random variable convicted sex offender follows normal distribution. We have to test whether the ...

Q: Two cards are chosen from a pack of cards without replacement. Are the following events independent?...

A: We have given that the statement about to the independent or not independent events.

Q: Find the number of words, with or without meaning, that can be formed using the letters of the word ...

A: We have to find the number of words, with or without meaning, that can be formed using the letters o...

Q: Conduct a hypothesis test and report the p-value. p=p=  (Include four decimal places)   At the 5% s...

A: Given that  Hypothesized Population Mean (\mu)(μ) = 1717 Population Standard Deviation (\sigma)...

Q: A researcher claims that the stomachs of blue crabs from LOcation A contain more fish than the stoma...

A:

Q: ple star deviation of protectión times was 4.7 months. Find a 90% confidence interval for the popula...

A: 3) C) It is given that sample mean is $41,000 and standard deviation is $410.  

Q: Find the cumula_tive distribution function F w(W) of W For a certain week, deter_mine the prob that ...

A: Here given probability distribution function of w

Q: Critical Value = ±2.492 test value t = -1.5. Should the researcher reject the null based on the data...

A:

Q: A simple random sample of 120 vet clinics in the Midwest reveals that the vast majority of clinics o...

A: Given that  Sample size n =120 Favorable cases x =88 Sample proportion p^=x/n  =88/120 =0.7333

Q: Determine the critical values for these tests of a population standard deviation. (a) A right-tailed...

A: Given that  Degree of freedom =df =12 Sample size n =30 , n=25  Find to critical value for chi squar...

Q: ard games, a player rolls two dice and moves the number of spaces equal to the sum shown on the dice...

A: Law of large no.'s:

Q: The amount of sodium sulfate, in mg, found in the bottled water follows a normal distribution with a...

A: Given  Population mean μ=13, population standard deviation σ=2.5  P(X>x)=76% =0.76  

Q: The intersection of events A and B is the event that both A and B occur.

A: We have given that,  The intersection of events A and B is the event that both A and B occur?  We ha...

Q: have training courses is 555 with standard deviation of 139. Brain Philippine (BP) offers expensive ...

A: No trainings: Mean score: 555 SD : 139 randomly selected 30 graduates of BP and asked their GRE scor...

Q: chickens. He records his harvest of eggs for 20 days. He finds that the average per day is 290 eggs ...

A: Here use single sample t test 

Q: n which test did she perform better?

A: Here use standard normal variable Z for comparison  Here mean and standard deviation is from 200 stu...

Q: Baby weights: Following are weights, in pounds, of 10 two-month-old baby girls. It is reasonable to ...

A: From the provided information, Sample size (n) = 10 Confidence level = 99.5%

Q: The time it takes a group of Grade 11 students to complete the Final Exam in Statistics and Probabil...

A: The mean is 58 and the standard deviation is 4.

Q: Tacoma's population in 2000 was about 200 thousand, and has been growing by about 8% each year. If t...

A:

Q: A simple random sample of 100 postal employees is used to test if the average time postal employees ...

A: It is given that Sample size n = 100 Sample mean M = 7 Sample SD s = 2 The critical value of t at df...

Q: Plot the numbers −56 and 73 on the number line below.

A: Plot the numbers −56 and 73 on the number line below.

Q: 2. Here is the equation of the list squares of regression line: y=31.9-0.304x. Sample size is 13. S=...

A: Given : Y = 31.9 - 0.304 xS = 3.667Sx = 13.033x = 58.23

Q: Suppose that four out of 20 liver transplants done at a hospital will fail within a year. Consider a...

A: The given case follows a Binomial distribution with parameters, p = 4/20 = 0.2 n = 3   Now, we are g...

Q: Using the data below, find ihe: 1. (a) mean (b) median (e) mode (4) QI (e) Q3 () D7 (g) PI0 (h) vari...

A: Data given Class Frequency 1 - 10 3 11 - 20 6 21 - 30 8 31 - 40 10 41 - 50 12 51 - 60...

Q: Working at home: According to the U.S. Census Bureau, 32% of men who worked at home were college gra...

A: Given that  Population proportion p=32%=0.32 Sample size n =519 Favorable cases x =165

Q: The distribution of sample means for bi-monthly employee income at a particular company for samples ...

A:

Q: A mayor running for re-election claims that during his term, average municipal taxes have fallen by ...

A: Steps for Hypothesis Testing 1 252 2 286 3 251 4 318 5 224 6 259 7 287 8 274 9 2...

Q: The average amount of money that people spend at Don Mcalds fast food place is $7.2700 with a standa...

A: The random variable X follows normal distribution. We have to determine the distribution of X, sampl...

Q: DSHUN EDWARDS Question 3 - of 13 Step 1 of 2 01:25:09 If you throw exactly two heads In two tosses o...

A:      

Q: Find the value of p from the table above. ii. Calculate the probability that at X is at least 5.  i...

A:                                                                                                     ...

Q: Problem: A machine produces cylindrical metal pieces. A sample of pieces is taken, and the diameter ...

A: It is given that Sample size n = 9 Level of confidence = 98%

Q: A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stoma...

A:

Q: Which is the correct claim below? OA. "The mean annual costs of food for dogs and cats are not equal...

A: here given to sample data  and assume that population variance are not equal  

Q: If one order is selected, find the probability of getting an order that is not accurate.

A: The data is given by   A B C D Total Accurate 311 264 250 134 959 Not accurate 33 60 30 11 13...