Amayor claims that more than70% of people in her city support her policies. -State the claim -State the opposite of the claim -State the null hypothesis -State the alternative hypothesis -State the type of test (left tailed, right tailed, or two tailed) -Use α = 0.05 to find the critical z-value used to test the null hypothesis

Q: (d) Make the decision. (Choose one) ▼the null hypothesis. Part: 4 /5 Part 5 of 5 (e) Summarize the…

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Q: A medical researcher says that less than 72% of adults in a certain country think that healthy…

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Q: True or False  In a hypothesis testing, if the p-value is less than the significance level a, we do…

A: Significance level: It is the proability of rejecting the null hypothesis when it is true. p-value:…

Q: 7. The Toylot company makes an electric train with a motor that it claims will draw an average of…

A: 7) Solution:  Given information: n = 9 Sample size  x  = 1.26 Sample mean s= 0.42 Sample standard…

Q: 3. An airline president wants to find out if baggage fees have made a difference in how much people…

A: Solution: 3. Let X be the weight of the person’s luggage. From the given information, n=320,…

Q: -Find the correct null hypothesis and for each correct alternative hypothesis 6. You want to test…

A: Given : Claim : A higher percentage of males who are Democrat than females who are Democrat.

Q: (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null…

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Q: State whether the standardized test statistic z indicates that you should reject the null…

A: If Calculated value of the Statistic is less than tabulated value of the Statistic or the critical…

Q: Determine whether the claim stated below represents the null hypothesis or the alternative…

A: The claim is less than 78​% of households in a specific county struggle to afford basic necessities.

Q: A motorcycle service manage has been using a model that can run an average top speed of 45 kph. A…

A: In order to determine whether the average top speed of the new model motorcycles is greater than 45…

Q: Test the hypothesis using the​ P-value approach. Be sure to verify the requirements of the test.…

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Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who…

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Q: What do you expect the numerator of the t-test to equal if the null hypothesis is true?     The…

A: We taking the sample mean in the numerator of t-test to equal if null hypothesis is true.…

Q: What does it mean if you reject the null hypothesis? What do you mean if you fail to reject the null…

A: The null hypothesis is denoted by H0 and alternative hypothesis is denoted by H1 . The null…

Q: A presidential candidate's aide estimates that, among all college students, the proportion p who…

A: State the hypotheses.

Q: ZA music teacher knows from past records that 60% of students taking summer lessons play the piano.…

A: Given: p = 60% = 0.60 ∝ = 0.05 n =80 x = 43 Thus, p^ = x/n = 43/80 = 0.5375 Part a: The test…

Q: nteered to take part in the study. - Design how you would carry out the experiment, what tasks the…

A: Answer) In order to test whether the herb work on insomnia. First I'll make hypothesis. Null…

Q: Average fishermen catch u=8.6  fish per day.  New quota results in following catch per day: 12, 6,…

A: Null Hypothesis: H0:μ=8.6 Alternative Hypothesis: H1:μ≠8.6 For the sample values,  x¯=7.3571, from…

Q: Assume you are conducting a hypothesis test to determine if pesticides cause cancer in rural areas.…

A: Given Assume you are conducting a hypothesis test to determine if pesticides cause cancer in rural…

Q: Many people believe that the average number of Facebook friends is 145. The population standard…

A: GivenMean(x)=149standard deviation(σ)=36.6sample size(n)=46α=0.01

Q: Find the P-value. P-value = (Round to three decimal places as needed.)

A: Given : sample size  = 160 Out of 160, mothers who smoked 21 cigarettes or more = 2 Sample…

Q: A type of error that incorrectly fail to reject the null hypothesis. a. Type I error b.Type Il error…

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Q: When doing a t-test comparing two means, the null hypothesis is always that…

A: We know that- For a t-test comparing two means- The two independent samples application with a…

Q: What determines whether we use the z-test or the t-test?

A: Z statistic: Z=(X¯-μ)σ/n~N(0,1) with mean=0,variance=1   t statistic t=(X¯-μ)S/n

Q: If the null and alternative hypotheses are Ho:p = 0.31 H1:p < 0.31 Then the test is O two-tailed O…

A: Given Information: Null Hypothesis H0:p=0.31 Alternative Hypothesis: Ha:p&lt;0.31   Depending on the…

Q: True or false If the p-value for a hypothesis test is greater than O.01, we fail to reject the null…

A: Answer - True

Q: (d) Based on your answers in parts (a) to (C), will you reject or fail to reject the null…

A: (d) The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter…

Q: Current Attempt in Progress If a p-value for a hypothesis test = .02, that means that approximately…

A: We have a given statement : if p value for a hypothesis test  = . 02

Q: A study on traffic safety claims that at least 10% of crashes are caused by distracted driving.…

A: Given that  Statement - A study on traffic safety claims that at least 10% of crashes are caused by…

Q: Use technology to find the P-value for the hypothesis test described below. The claim is that for a…

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Q: Suppose you conduct a hypothesis test to determine whether or not the average age difference between…

A: For conducting a hypothesis test to determine whether or not the average age difference between…

Q: Develop the analysis of variance computations for the following completely randomized design. At a =…

A: Given information: The table of three treatments.   Treatment   A B C 137 107 91 120 115 81…

Q: Identify the claim and state Ho and H Determine whether the hypothesis test is left-tailed,…

A: 1. Denote p as the true proportion of microwaves that need repair.

Q: The null hypothesis (Ho) in a hypothesis test usually states that: O the probability of error will…

A: We have given the following statement about null hypothesis.

Q: Alpha (a) is used to measure the error for decisions concerning true null hypotheses. What is beta…

A: There are two errors in the testing of the hypothesis. Type I error  The type I error is rejecting…

Q: Tru or False? For a right-tailed test, reject the null hypothesis only if P < α. For a left-tailed…

A: Rejection rule: For both right and left tailed tests, reject the null hypothesis if P value is less…

Q: Only 25% of registered voters voted in the last election. Will voter participation higher for the…

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Q: If the value of the observed test statistic falls in the rejection region, the alternative…

A: Identify the correct option for if the value of the observed test statistic falls in the rejection…

Q: A publisher reports that 79% of their readers own a personal computer. A marketing executive wants…

A: sample size(n)=100sample proportion()=0.89significance level()=0.02

Q: Suppose that we are doing a two-sided hypothesis test on the population mean: Ho: µ=10 at 5%…

A: Given information: μ0=10, α=0.05μ=11Power=1-β=0.40

Q: A random sample of 100 voters in a community produced 59 voters in favor of candidate A. The p-value…

A: Given: n= 100 ,x= 59.0 p= 0.5 ,significance level(∝)= 0.01 p̂= 59.0 / 100 = define hypothesis;-…

Q: MED Drug Company designed a new drug to prevent colds. The company states that this drug is about…

A: Given : MED Drug Company designed a new drug to prevent colds The company states that this drug is…

Q: A null and alternative hypothesis are given. Determine wheter the hypothesis test is left-tailed,…

A: Given information- We have given the null and alternate hypothesis- Null Hypothesis, H0: p ≤ 0.1…

Q: Select the appropriate null and alternative hypothesis for the following research question: People…

A: The claim is that people who see therapists have lower depression than people who do not see…

Q: List down five (5) different real-life situations where hypothesis testing can be done. Identify the…

A: Hypothesis testing is a type of inferential statistics.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.