Start your trial now! First week only $4.99!*arrow_forward*

Question

A contingency table for two nominal variables has three (3) row and four (4) columns. The number of degrees of freedom associated with the chi-square test of variable independence will be df= 7.

True or false?

1 Rating

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: A farmer wants to test the effectiveness of a pest control method in allowing strawberry blooms to y...

A: Click to see the answer

Q: A researcher is interested in the effect of positive affirmations on self-confidence. What is the co...

A: Note: Hey there! Thank you for the question. As you have posted multiple questions together, accordi...

Q: sample of 171 life science students were exposed to both a traditional method of identifying conifer...

A: In above example we want check that Confir ID should be added or not in the curriculum at SRU. hence...

Q: Find the y-intercept b for the least-squares regression line. x y 7 15 10 16 15 25 18 32

A: Calculate the mean of Y and X where n = 4.

Q: The scores of the 48 members of a sociology lecture class on a 50-point exam were as follows. Comple...

A: Frequency of each class is obtained by counting the number of times each data point appeared in each...

Q: This week the number X of claims coming ir nsurance office is Poisson with mean 100 probability that...

A: X follows a Poisson distribution with a mean of 100 E(x)=λ=100 X~P(λ) and Y|X follows a binomial dis...

Q: For each problem, write which test you used in your calculator, draw the graph, calculate p-value, a...

A: Let X denotes the weight of students at the beginning of the freshmen year & Y denotes the weigh...

Q: CNNBC recently reported that the mean annual cost of auto insurance is 979 dollars. Assume the stand...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a...

Q: Class f; X¡ f; X¡ f;(x;-x)2 fi fi (x; |(x;-x)3 -x)4 0-3 5 2 10 211.25 -1373.13 8925.31 4-7 4 6 24 25...

A:

Q: A) Determine the p value B) state the conclusion for the hypothesis test

A: The test statistic is 1.44.

Q: Consider the following hypothesis test. HoiH2 70 HaiH< 70 A sample of 100 is used and the population...

A: Here, the population standard deviation is 12.So, the statistic is given by, Z = x - 7012100 = x - 7...

Q: A random sample of 100 people was taken. Seventy-nine of the people in the sample favored Candidate ...

A: Click to see the answer

Q: A university has decided to introduce the use of plus and minus grading as long as there is evidence...

A: Solution: Let p be the population proportion. The given claim is that the proportion is greater than...

Q: On the midnight shift, the number of patients with head trauma in an emergency room has the probabil...

A: The given probability distribution table is, The value of mean is,

Q: Assume a population of 2 , 6 , and 7 . Assume that samples of size nequals 2 are randomly selecte...

A: The population of 2,6 and 7. And the samples are (2,2) (2,6) (2,7) (6,2) (6,6) (6,7) (7,2) (7,6) ...

Q: A study showed that 64% of supermarket shoppers believe supermarket brands to be as good as national...

A: Null Hypothesis: H0: The proportion of supermarket shoppers believe supermarket brands to be as good...

Q: SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested ...

A: State the given values. The z value at 95% confidence level is 1.96.

Q: Marivic is interested in the effect of playing puzzle games on academic achievement. She devised a s...

A: R-squared: It is a statistical measure that represents the proportion of the variance for a dependen...

Q: A company wants to estimate the mean time (in hours) per week for an adult who uses computers at hom...

A: Click to see the answer

Q: For each problem, write which test you used in your calculator, draw the graph, calculate p-value, a...

A: The above test is two sample z test as population standard deviation is known let us consider , x:...

Q: 2. A school keeps a record of drinks purchased from their cafeteria. The data in the table show the ...

A: Since you have asked multiple questions, so we will solve the first question for you. If you want an...

Q: The wait time at a drive-through fast-food restaurant has a standard deviation of 18.0 seconds. Use ...

A: Given claim: the standard deviation of wait time is less than 18.0 seconds. Null Hypothesis: H0: The...

Q: answer b

A: It is given that, the confidence interval is (171.5, 176.1).

Q: I am having trouble solving this problem. Can you please provide me with some help? Thank you. I ...

A: State the hypotheses. That is, there is no evidence to conclude that the sample means are statistic...

Q: Please show work thank you The p-value of a test of H0: μ1≤μ2 versus Ha: μ1>μ2 is 0.04711. D...

A: Since, the p-value depends on nature of alternate hypothesis, so we will calculate p-value according...

Q: Annual expenditures for prescription drugs was $838 per person in the Northeast of the country. A sa...

A: Click to see the answer

Q: Five hundred eighteen (518) homes in a certain southern California community are randomly surveyed t...

A: Given information No of homes meeting the minimum earthquake preparedness x = 176 Total homes survey...

Q: Discuss the reasons and situations in which a businessperson would want to use linear regression. Ho...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a ti...

Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of 9...

A: Z=x - μσ~ N(0,1)

Q: The Coast Starlight Amtrak train runs from Seattle to Los Angeles. The scatterplot below displays th...

A: The scatterplot is

Q: University admission officers believe that scores on the Scholastic Aptitude Test (SAT) are strongly...

A: Given Information : University admission officers believe that scores on the Scholastic Aptitude Te...

Q: Insurance companies are interested in the average health costs each year for their clients, so that ...

A: Given that, Insurance companies are interested in the average health costs each year for their clien...

Q: Consider the following hypothesis test. Ho: µ = 100 H: µ ± 100 A sample of 65 is used. Identify the ...

A: Click to see the answer

Q: Hi, Can you please assist with the calculations and explainations with the question in the picture ...

A: Click to see the answer

Q: Profit 19,449 0 42,877 13,738 17,843 87,256 41,825 7,655 20,011 51,420 53,37...

A: The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter the...

Q: A group of 44 people were randomized into two equal-sized groups (22 in each). The treatment group a...

A: Click to see the answer

Q: In a survey it was found out that 60 out of 170 females and 32 out of 128 males preferred a certain ...

A: The test hypotheses are: Null hypothesis: H0: p1 = p2, that is, there is no sex difference in the pr...

Q: Annual expenditures for prescription drugs was $838 per person in the Northeast of the country. A sa...

A: State the given values. State the Null and alternate hypothesis. The null hypothesis states that th...

Q: Please answer all parts

A: a) From the provided output, the equation of the least squares line is HR%=–27.2+0.558VO2Max b) From...

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an individu...

A: Given, x=26μ=26σ=7n=40 Let X be the length of unemployment. 1. The required distribution of X is gi...

Q: The manager of a computer retails store is concerned that his suppliers have been giving him laptop ...

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want solution...

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

A: Mean = 26 Standard deviation = 3.4

Q: For normal distribution with a mean of 278 and a standard deviation of 25, what is the Z value for a...

A: Click to see the answer

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an individu...

A: Let x denote the length of unemployment is normally distributed with population mean of 29 weeks and...

Q: The price per share of stock for a sample of 25 companies was recorded at the beginning of the firs...

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population ...

Q: A poll found that82%of a random sample of 1093adults said that they believe in ghosts. a. Determi...

A: a) Given that n=1093p^=82%=0.82Confidence level=99%=0.99Significance level=0.01 The z critical value...

Q: If P(A) =0.55 and P(A and B) =0.22. A and B are independent, find P(B)=?

A: It is given that P(A) =0.55 P(A and B) =0.22 Given, Event A and B are independent then, P(A and B)...

Q: Answer F

A: As per the compony rule, We can answer only three subparts in a single question. Here, mention that ...

Q: A stick is one foot long. You break it at a point X (measured from the left end) chosen randomly uni...

A: I have solved first three parts (a), (b) and (c). Given The random variable X is uniformly distribu...