A recent study showed that in a random sample of 100 people, 30% had visited Worlds of Fun.  In another random sample of 150 people 24% had visited Knott’s Berry Farm. At ∝ = 0.05 are the proportions of people who visited each park different? The samples were independent. In a two sample hypothesis test the p-value was 0.2917.  In this test your decision would be to reject the null hypothesis  fail to reject the null hypothesis  accept the alternate hypothesis as true  none of the above

Q: The Northwest Missourian reported that 17% of all Northwest students attended a Northwest Encore…

A:

Q: In a hypothesis test with a = 0.05 the p-value is calculated to be 0.02. What decision should be…

A: we have find  decision.

Q: A paint manufacturer advertises that one gallon of its paint will cover 400 square feet of an…

A: For paint manufacturer, The null and alternative hypothesis are : Ho : μ=400H1 : μ<400  For…

Q: An automobile manufacturer is considering using robots for part of its assembly process. Converting…

A: a) The given information states that an automobile manufacturer is assuming robots for part of its…

Q: You are asked to test the null hypothesis at the .05 level of significance and you end up with…

A: It is given that the z-observed value is -1.83.

Q: The mathematics department at one university reports that the failure rate for College Algebra is no…

A: 2 types of errors. Type 1: Rejecting null hypothesis when it is True Type 2: Fail to reject null…

Q: A advertising company claims that it receives 15 % responses from its mailing. To test this claim,…

A: From the provided information, Sample size (n) = 200 From which 40 responses. Sample proportion (p̂)…

Q: To be considered 18-karat (18K) gold, a piece of jewelry must be made of 75% pure gold. The higher…

A: It is needed to define the type I error.

Q: A refrigerator manufacturer claims that the mean life of its competitor's refrigerators is less than…

A:

Q: he body weight of a healthy 3-month-old colt should be about μ = 62 kg. (a) If you want to set up a…

A:

Q: In a survey, 37% of the respondents stated that they talk to their pets on the telephone. A…

A: Here we need to calculate the value of the Z statistic.

Q: With a p value of .04 and an ⍺ of .05, should you reject or fail to reject the null hypothesis?"

A: Given that: p-value= 0.04 ⍺=0.05

Q: In a hypothesis test with hypotheses H0 : P greater than equal 0.76 and H1 : P less than 0.76 , a…

A: Denote p as the true population proportion. The null and alternative hypotheses are: Null…

Q: When testing for differences between the means of two related populations, what is the null…

A:

Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…

A: We have to find out given null and alternative hypothesis that we would use for this hypothesis…

Q: An economist claims that the proportion of people who plan to purchase a fully electric vehicle as…

A: The provided information are: Sample size (n) = 750Hypothesised proportion (po)=0.65From the…

Q: In each of Exercises, we have stated the purpose for performing a hypothesis test to compare the…

A: a)The test hypotheses are,

Q: Dreamfilms Studios boasts that its summer features are so good that at least half of all tickets…

A: Claim :- Less than half of all tickets sold are for Dreamfilms movies. Final Decision is Fail to…

Q: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.42. Decide…

A: P( z < -1.42 ) = NORMSDIST( -1.42) ------ Excel function                      = 0.0778…

Q: A coin-operated drink machine was designed to discharge a mean of 8 ounces of coffee per cup.…

A: GIVEN: μ=8 Hypothesis: The null hypothesis is given below: H0: μ=8 The alternative hypothesis is…

Q: A random sample of 100 students at a high school was asked whether they would ask their father or…

A: There are two independent samples which are follows normal distribution. The number of successes,…

Q: Suppose a sample size of 103 was used to conduct a left tailed hypothesis test for a single…

A: Given Information:  Sample size (n) = 103  Hypothesis: Ho: u = 22  p-value = 0.04

Q: If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make…

A: Note: Thank you for the question. Since multiple questions are posted, according to our policy, we…

Q: With H1: p < 0.32, a test statistic is z = -1.23.  Use a 0.01 significance level to find the…

A: Given that,null,  Ho:p=0.32  alternate,  H1: p&lt;0.32level of significance, alpha = 0.01

Q: The test statistic of z = 2.47 is obtained when testing the claim that p > 0.8. Identify the…

A: Given, The test statistic of z = 2.47 is obtained when testing the claim that p &gt; 0.8. The…

Q: In a sample of 40 people 40% are black. Test the null hypothesis that the population proportion of…

A: A sample of 40 people; n=40 40% are black; p^=0.40 Population proportion of black; p=0.2

Q: A certain university claims that for the last school year the proportion of students who were not…

A: Given that  Claim : The proportion of students who were not able to earn a college diploma is at…

Q: Explain whether or not rejecting the null hypothesis makes the alternative hypothesis true and why.…

A: 1). It is known that null and alternative hypotheses are contradicting (opposite to) each other.…

Q: Suppose a 95% CI for the proportion of adults that regularly attend a tae kwon do class at least…

A: From the provided information, Confidence level = 95% The confidence interval = (0.2534, 0.3894)

Q: For a hypothesis test of Ho :H = 70 versus HA:µ < 70: • The given sample has a test statistic of…

A: We have the values,  Xbar = 67.1 and ? = 18.3  And n = 36 . We have to find p-value ?

Q: When having a baby, assume that the probability of having a boy is 50% and the probability of having…

A: Amswer: See the answer below:

Q: The the P-value, the stronger the evidence against the null hypothesis provided by the data. A)…

A:

Q: Suppose we want to test the null hypothesis H0 : p = 0.34 against the alternative hypothesis H1 : p…

A: Solution Given hypothesis H0 : p = 0.34 against H1 : p &lt; 0.34 Sample=x=120 N = 300 P(cap) =…

Q: A software company advertises that its software can improve students' grades by at least 15%.  One…

A: Type I error has occurred, when the null hypothesis is rejected while the null hypothesis is true.…

Q: t is more difficult to reject a null hypothesis if we use a 10% level of significance compared with…

A: Given that  Rejection of null hypothesis Level of significance (α)= 0.10 Level of significance (α) =…

Q: The test statistic of z=1.93 is obtained when testing the claim that p>0.2. a. Identify the…

A: From the provided information, a) The hypotheses can be constructed as: H0: p = 0.2 H1: p &gt; 0.2…

Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…

A: We have to find out hypothesis for given data  Here data is in proportion So we use p ..

Q: If the level of significance in a hypothesis test is 1 %, what would the p-value have to be for…

A: We fail to reject the null hypothesis when the p value is greater than the significance level. We…

Q: What is the observed test statistic for this test?

A: Given : n=20 , X=12 , p0=0.60 , α=0.01 Our aim is to find the value of the observed test statistic…

Q: The body weight of a healthy 3-month-old colt should be about u = 66 kg. (a) If you want to set up a…

A: From the provided information, Population mean (µ) = 66 kg

Q: The mathematics department at one university reports that the failure rate for College Alge is no…

A: Type I error= Rejecting the null hypothesis when it is TRUE. Type II error = Fail to reject null…

Q: A coin-operated drink machine was designed to discharge a mean of 9 ounces of coffee per cup.…

A: Given: µ= 9.0 Need to define hypothesis test of given statement?

Q: The test satistic of z=-2.81 is obtaines when testing the claim that p=2/3. a. Using a significance…

A:

Q: Suppose you are conducting a hypothesis test and you find a P-value of .17. Is there sufficient…

A: Decision Rule: If p-value ≤ α, then reject the null hypothesis. Given information, P=0.17 α=0.10

Q: If a hypothesis test were conducted using a 5% level of significance, for which of the following…

A: From the above data. If a hypothesis test were conducted using a 5% level of significance, for which…

Q: In each of Exercises, we have stated the purpose for performing a hypothesis test to compare the…

A: a)The test hypotheses are,

Q: A study found that 13% of Americans have seen or sensed the presence of an angel. A contingent…

A:

Q: When is a researcher at risk of making a type 2 error?   whenever H0 is rejected  whenever H1 is…

A: When is a researcher at risk of making a type 2 error?   A type II error that describes the error…

Q: A software company advertises that its software can improve students' grades by at least 15%.  One…

A: Types of errors: Rejecting a true null hypothesis is called a Type I error. Failing to reject a…

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.