The number of successes in n trials is to be used to test the hypothesis that the parameter of a binomial population als against the altermative that it does not equal - sheחחה

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: If each trial has only two possible outcomes, that is, success and failure, the probabilities of…

Q: customers buy a magazine and he thinks that he might be able to use the display space to sell…

A: The experiment is Binomial because: 1) There is only two possibility for every customer that are…

Q: In a two-tailed test, with α=0.01 , and N is 41. b) Is the tobt of +4.0 of significant?

A: b) The level of significance is 0.01. The degrees of freedom is, df=n-1=41-1=40 Computation of…

Q: One survey conducted by a major leasing company determined that the Lexus is the favorite luxury car…

A: Here we need to find the required test statistic for the given situation. The population proportion…

Q: The owner of a small dell is trying to decide whether to discontinue selling magazines. He suspects…

A: If each trial has only two possible outcomes, that is, success and failure, the probabilities of…

Q: A lecturer claims that more than 60% of USP students have personal computer. A researcher wishes to…

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Q: A hypothesis examination is performed in a study of AirBnB's to learn about the proportion of them…

A: The p-value can be expressed as the extreme probability values, under the likelihood of the null…

Q: Researchers conducted a study to find out if there is a difference in the use of online-learning by…

A: State the appropriate hypothesis: Let p1 be the population proportion of online learning by 16-29…

Q: A newspaper article contains the statement that, nationwide, 36% of all graduate students have a job…

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Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A:

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: Given,  X = Number of people who buys the magazine p = probability of a person buying a = 0.082…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspe…

A:

Q: Suppose a research study uses two independent groups with 21 individuals in each group. If a t-test…

A: The degrees of freedom is, df=n1+n2-2=21+21-2=40 The degrees of freedom is 40. Consider the test is…

Q: or a population with σ = 12, how large a sample is necessary to have a standard error that is less…

A: The population standard deviation is, σ=12 The standard error is, Use the standard error, the…

Q: a total of 20 applicants came in for a job interview. Among them, four were 45 years old, six were…

A: Given Data : X f 45 4 39 6 42 3 40 5 35 2 N = 20 Mean =x =∑fxN Var=1N∑fx2-x2 SD=Var

Q: A study found that in 2005 12.5% of US workers belonged to unions. Suppose a sample of 500 US…

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Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

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Q: The only difference between a hypergeometric experiment and a binomial experiment is that the…

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Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: Given: It is given that 9.3% of his customer buy a magazine. Probability of success p = 0.093…

Q: A researcher wants to test the claim that convicted burglars spend an average of 18.7 months in…

A: Here, population standard deviation is not known. Hence, it is appropriate to use one sample t-test.…

Q: A researcher studying public opinion of proposed Social Security changes obtains a simple random…

A:

Q: A smartphone manufacturer admits that 12% of the smartphones they make have defects that could…

A: 1. Given that X=the number of smartphones manufactured by this company that have defects that could…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A:

Q: A random group of used books was selected from book warehouse to analyze their condition. The book…

A: Correct answer is (b)

Q: With regards to the assumptions of the independent t test, what is the maximum variance one group…

A: We have to find maximum variance one group can have to another and still maintain homogeneity of…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: a) Introduction to binomial distribution: Consider a random experiment involving n independent…

Q: An employee of a bank wants to test the null hypoth-esis that on the average the bank cashes 10 bad…

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Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: Introduction to binomial distribution: Consider a random experiment involving n independent trials,…

Q: A hospital director is told that 33% of the emergency room visitors are uninsured. The director…

A: Stating the appropriate null and alternative hypotheses:Based on the study, it was found that 33% of…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: Suppose a research study uses two independent groups with 31 participants in each group. If a t-test…

A:

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: Introduction to binomial distribution: Consider a random experiment involving n independent…

Q: A binomial probabilty experiment is conducted with the given parameters. Compute the probabilty of x…

A: Obtain the probability that X equals 5.   The probability that X equals 5 is obtained below as…

Q: A research center claims that 30% of adults in a certain country would travel into space on a…

A: Given ,  Sample size = n = 1200 Sample proportion = p^ = 33% = 0.33 a)  Claim : 30% of adults in a…

Q: Can it be concluded that the percentage today is less than 76% if a=0.01?

A: 76% of Americans said they would prefer to purchase an American automobile.  Random sample of 56…

Q: A standardized IQ test is known to be normally distributed and has μ=100 and σ=10. there is a common…

A: Given that, A standardized IQ test is known to be normally distributed and has μ=100 and σ=10. there…

Q: he manufacturer of an airport baggage scanning machine claims it can handle an average of -1) At a =…

A: Given data,Population Mean μ=530n=16Sample mean x=507sample sd s=47α=0.05

Q: In a random sample of n = 200 patients, the proportion cured by a new drug was p = 120/200 = 0.6. We…

A: (a) The confidence level is 90%. Use the z table: to obtain critical value for area 0.90. The…

Q: An airline claims that the no-show rate for passengers is less than 5%. In a sample of 420 randomly…

A: Given: Population proportion (p) = 0.05 Sample proportion p^=19420=0.04524

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: a) There are two outputs for one success (buys a magazine) and other failure (doesn't buys a…

Q: An educator believes that the proportion of finance majors seeking to earn an MBA degree equals the…

A: Here , 2 proportion Z test is applicable

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: (a) The variable X is defined as ‘number of customers that buy a magazine’. The percentage of…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: n = 13 r = 5 p = 0.096

Q: owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that…

A: Given: Percentage of customers buying a magazine = 8.8%

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A: If a random variable X~B(n,p), then probability mass function, P(X=x) : nCxpx(1-p)n-x  where…

Q: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects…

A:

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.