Ho:p = 0.64 H1:p < 0.64 Your sample consists of 114 subjects, with 72 successes. Calculate the test statistic, rounded to 2 decimal places 2 =

Q: How smart is your phone? A random sample of 10 samsung Galaxy smartphones being sold over the…

A: The random variable X follows normal distribution. We have to construct the 99.8% confidence…

Q: You want to determine if the graduation rate of different than the known national graduation rate.…

A: The researcher is interested to determine if the graduation rate of high-school students is…

Q: find the test value used to test the claim that the proportion of jellyfish stings at jones beach is…

A: Given, Sample size = 696 Sample proportion = 0.30   The null and alternative hypothesis is:

Q: Nationally, 80 percent of adults own an thermometer. You are interested in whether the same…

A: We have given that  Sample size n = 100 Sample proportion p^=75%=0.75 Population proportion…

Q: Which value is greater than at most 75% of all scores in a data set?

A: The median is middle value of the observations, above or below which 50% of the observations lie.

Q: Karen wants to estimate the mean number of siblings for each student in her school. She records the…

A: Given, Karen records the number of siblings for each of 200 randomly selected students in the…

Q: Iculate the mean and median and report the lower value of two.

A: Answer The sample size [n] = 10-7.4, -3.4, -2.7, -2.2, -1.9, -0.8, 0.3, 0.9, 0.9, 1.1The mean:The…

Q: How smart is your phone? A random sample of 10 Samsung Galaxy smartphones being sold over the…

A: We have given that,  The data set is,  199, 169, 385, 329, 269, 149, 135, 249, 299, 249 standard…

Q: You sample 200 men, and 70% own cats.You sample 160 women, and 15% own cats.Find the test statistic,…

A: Obtain the value of the test statistic. The value of the test statistic is obtained below: From the…

Q: Testing:��:�=26.9��:�&lt;26.9Your sample consists of 30 subjects, with a �¯ = 26.3 and � =…

A: The objective of this question is to calculate the test statistic for a given sample. The test…

Q: When the Standard Score = -1, what is the percentile of the raw score? %3D O 2nd 14th O 16th 34th…

A: It is an important part of statistics. It is widely used.

Q: G iven:  mean =85    s=12     n =3500 What % of scores are between 97 to 109 ?

A:

Q: You have a sample of 10 (sorted) scores:   -15.5 -13.4 -12.7 -12.2 -11.1 -10.8 -9.1 -8.9 -7.9 -7.1…

A: -15.5-13.4-12.7-12.2-11.1-10.8-9.1-8.9-7.9-7.1Sample of size(n)=10

Q: A sample mean has a z= -4.0 on the sampling distribution created from the population of psychology…

A:

Q: A college student is interested in investigating the claim that students who graduate with a…

A: From the provided information,

Q: ​Claim: Fewer than 95​% of adults have a cell phone. In a reputable poll of 1073 ​adults, 90​%…

A: Formula for Test statistic  Test statistic ( z ) z = ( p^ - p ) / ( √( p * ( 1 - p) / n) )

Q: what percent of the total population is found between the mean and the z-score given? z=3.58

A: We have given that. Standard normal.  X~N( 0 , 1 )   μ =0  , ? =1   Z-score =( x - μ )/?   z= 3.58

Q: A simple random sample of 28 observations was taken from a large population. The sample mean equaled…

A: It is given that, a simple random sample of 28 observations was taken from a large population with…

Q: Use technology to perform two-sample t-test to determine whether there is a difference in the mint…

A: Two sample t -test    To determine whether there is difference in the mint dates and the values of…

Q: find the value between z score -2.9 and 1.5287

A: To find: Find the value between z score -2.9 and 1.5287

Q: Testing whether Story Spoilers Spoil Stories A story spoiler gives away the ending early. Does…

A: The t test are used to determine the mean significance between the two samples from the population.…

Q: You have a sample of 10 (sorted) scores: -15.5 -13.4 -12.7 -12.2 -12 -10 -9.1 -8.9 -7.9 -7.1…

A: From the provided information,Number of observations (n) = 10

Q: You are conducting a multinomial hypothesis test (a = 0.05) for the claim that all 5 categories are…

A: There is one categorical variable. It has 5 categories. The observed and expected values are given.…

Q: Celyn is among the 1500 students of the school.If Celyn's score based on the Standard-Binet test is…

A: Given: Number of students = 1500 Score on standard Binest test is 105

Q: A student assistant administers an exam for the incoming grade 11 ABM students. Fifteen incoming…

A: We have to find test statistics.

Q: A survey of 1195 CEOS finds that 717 believe the economy will improve next year. We are trying to…

A: We have given that,  Population proportion (p)= 66% = 0.66 and favorable cases (X) = 717 , sample…

Q: n a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA…

A: Central limit theorem: For a simple random sample of size n drawn from a population, the sampling…

Q: The test scores for a class of 203 students are computed. What is the location of the test score…

A: Third quartile is above 75% of the observations.

Q: In the population, the mean SAT score is 1000. Would you be more likely (or equally likely) to get a…

A: Given that the population mean is 1,000 and the samples sizes selected are 10 and 30.

Q: The NAEP music assessment scores for eighth grade students are approximately N (150, 35). Find the…

A: Given data: Let , X ~ N (150, 35) To find: 1.Find the z-scores by standardizing the following…

Q: A software company is interested in improving customer satisfaction rate from the 53% currently…

A: Statistical tests are used to calculate the test statistic and p-value. This test statistic and…

Q: Sample proportion is 18%. Population proportion is 13%. Sample Size is 400. Calculated value of test…

A:

Q: (a) Fill in the sample means in the table. Do not round your answers. Sample Pencil weight (in…

A: GivenThree students want to estimate the mean pencil weight of their schoolmates.

Q: Based on the results of a test of significance, a researcher decides to reject the null hypothesis…

A: The researcher decides to reject the null hypothesis when in fact the null hypothesis is true.

Q: PracticE the legalization of marijuana. Among the Democratic voters surveyed, 158 of the 200 people…

A: 2 proportion z test is applicable

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

A: n1=70 , p1=30% , n2=170, P2=60%

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: Given information, n1=90 and p1=0.80 n2=110 and p2=0.70 Consider, the pooled proportion,…