IT'S NOT FOR A GRADE!!! Don't reject it and answer all.

Q: what is the significance of the equal sign?

A: Explanation of the answer is as follows

Q: The failure rate for taking the bar exam in Philadelphia is 41%.  If 375 people take the bar exam,…

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41%  i.e. probability, p =…

Q: A random sample of 105 students of University A showed that 12 were in favour of a new grading…

A: Given: Sample size (n1)=105Sample size (n2)=108x1=12x2=18α=0.01

Q: An absent-minded professor misplaced the business math test scores of his five students. However, he…

A:

Q: 2. What should you do if the p-value is low?

A: We know that, a P-value is a statistical measurement used to validate a hypothesis against observed…

Q: I have a statistics class with 35 students in the first test's mean score was 78. I lost one of the…

A: The mean of the 35 students’ test score is 78That is,

Q: What is a? What is the power of the test?

A: Rejection region is that sum of Xi's less than or equal to 4 when the sample size is 4.

Q: I want a 99% confidence within 2% for the true proportion of bald people in the US.  How many people…

A: Given that, Margin of error E=0.02 Confidence level is 99% Critical value: The two tailed z critical…

Q: Is it correct to say, “To be a quantitative researcher is to know much about statistics”? Justify…

A: Quantitative researchers need to understand how to interpret statistical analysis results.  Keeping…

Q: The male population of PU is 250 lakhs. The number of literate males is 20 lakhs and the total…

A:

Q: How would I do this step by step in Excel?

A: It is given that the z-scores are -2.165 and -1.35.

Q: lowing is the correct decision?

A:

Q: the final exam, the teacher had matched 9 students in the first section with 9 students in the…

A: The mean difference between the paired sample or dependent sample is calculated for sample of size…

Q: What is the test static and the p value

A:

Q: Why t Test Not Appropriate?

A: t Test is the statistical parametric test which is used to compare the means of the population. It…

Q: Juan scored 10 points higer on his midterm and 47 points higher on his final than he did  on his…

A:

Q: 39. What is the value of (EX)² for the scores: -1, 0, 3, 5?

A: Given that  The data are -1,0,3,5 Find the value (∑X)2

Q: Travis took the ACT (μ=19.50,σ=7) and recieved a percentile of 67. What was his z score? What was…

A: you had not provided distribution of sat score so we can not find answer of c.

Q: How did you get the p-value?

A:

Q: The manufacturer of a new drug claims that it will lower blood pressure by 13 points on the average.…

A: Given that: Data points [12.0, 8.0, 15.0, 9.0, 10.0, 16.0] From Data points we get following: x̄=…

Q: What is the power of a test?

A: Power of test is the probability of rejecting the null hypothesis when it is false. Therefore, the…

Q: An article reports that in a sample of 124 nurses, 51 said that a busy workload had a positive…

A:

Q: A random sample of 180 men who took the driving test found 103 passed. A similar. sample of 225…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: We want to test if the percentage of cash users in purchases is greater than 30. Determine the…

A: The hypothesized proportion is 0.30.

Q: 41. What is the value of EX + 1 for the scores: -1, 0, 2, 3?

A: Given data is -1,0,2,3

Q: What is a label?

A: In data set, each individual value has a unique name that can be used to identify it. These…

Q: All of these answers have been marked incorrect in my school's grading system.

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: an IQ higher than 90% of the population was obtained by taking the webchers IQ test, what is the IQ…

A: Given: Population mean IQ score using Stanford Binet intelligence test μ = 100 Population standard…

Q: What does it mean to say the race was too close to call?

A: Here Given  Proportion vote A would receive = PA=0.46 Proportion vote B would receive=PB=0.44…

Q: Suppose that the mean score of 28 students (in a class of 30 students) in a quiz is 28. What should…

A:

Q: A teacher gave the same test to two classes. In the class with 50 students, the mean score was 74.…

A: Given:

Q: Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: uppose the proportion of all college students who have used marijuana in the past 6 months is p =…

A:

Q: What would be the fair price to pay for a chance to draw a ball from the box?

A: The organizing committee of a high school reunion placed 150 balls inside a box. Ten of the balls…

Q: If Ted scores in the first quartile on his math test, that means he scored better than most students…

A:

Q: If the p-value of a test is 0.022. what is your decision?

A: For making conclusion about null hypothesis Ho we compare p-value and level of significance.

Q: Explain The concept of differentiability?

A: Differentiability: Let f(x) be a real-valued function defined on an open interval (a, b) and let c…

Q: What is defination for p -value

A: P-value :  It is mostly used for take decision while testing a hypothesis.

Q: What are the two types of incorrect decisions?

A:

Q: Sony wants to administer a satisfaction survey to its current customers. Using their customer…

A: solution : the above question answer D is correct answer : Simple random

Q: If the test result is significant at 5% level, it must also be significant at 1% level.

A:

Q: How many false positives were there? Explain the consequences of a false positive for the person…

A: The table given below    Test positive  Test negative  Total Have HIV 1339370 4030 1343400 Do…

Q: You believed that sending positive thoughts to your classmates that have been so much bothered with…

A: The data represents the grades of classmates before and after bunch of thoughtful messages are sent…

Q: If the mean of 5 values equals 34, then ΣΧ-

A:

Q: A manager for Shopee wants to determine the current percentage of Filipino adults who now use the…

A: The Cochran formula is used to determine the minimum sample size for the estimation of population…

Q: The weights in ounces of a sample of running shoes for men and women are shown. If we want to test…

A: The mean significance is tested for the larger population by taking samples into accounts using the…

Q: Please teach me on how to solve this problem. C is wrong, maybe B, because it's talking about…

A: Given that, Mean altitude before watching the video: M before=141 Mean altitude before watching the…

Q: is winning the election (in other words, his support rate is higher than 50%)?

A: Here confidence interval for proportion is as shown in further step

Q: What is the value of ΣX for the scores 2, 5, 3?

A: Given data2,5, 3ΣX = 2+5+3 = 10

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.