X = 45.5          s = 4.81           N= 50 What raw score guesses define the middle 95% of the scores? What raw score guesses define the middle 99% of the sc

Q: a. The null and alternative hypotheses would be: Ho: Select an answer ✓ Select an answer ✓ H₁:…

A: Sample Mean  45.62   Standard Deviation (S1​)                       2.56 Sample…

Q: O subjects in a study were randomly assigned into two equally sized groups. One group was shown a…

A: Given data 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: A certain test is worth125 points. How many points (rounded to the nearest point) are needed to…

A: A certain test is worth125 points.

Q: What is the value of Ex² for the scores 1, 0, 2, 4? O 21 O 28 O 14

A:

Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

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: Right 48 45 50 41 42 44 41 47 Left 48 42 47 40 42 41 40 49 Assume a Normal distribution. What can be…

A: See below

Q: A person scored in the bottom 33% in a test. If the test scores are normally distributed then the…

A:

Q: What is the weighted mean of the numbers 10%, 30%, 60%, 70, 86 and 94

A: The formula of weighted mean is given by…

Q: An automobile manufacturer produces production parts with 98% accuracy. What is the probability that…

A:

Q: A student gets 9 out of 15 problems correct on a homework assignment. What percent of the assignment…

A: The objective of this question is to find out the percentage of the assignment that the student got…

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: When 500 junior college students were surveyed,120 said that they have previously owned a…

A: When 500 junior college students were surveyed,120 said that they have previously owned a…

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A:

Q: Eight consecutive heart beats of a patient per minute are:     72 75 76 (p+3) 71 73 74 p If…

A: Given that,The sample mean  is 75.The data is: 727576      717374            The objective is to…

Q: What are the steps for Finding Proportions for One Score?

A:

Q: 4) Below is a set of data collected from students in an experiment. Between what scores would we…

A: Given the data of students as follows.x3711811129569511want to calculate a 95 % confidence interval

Q: 31 of 48% is what?

A: 31 of 48%

Q: A newspaper reported on the topics that teenagers most want to discuss with their parents. The…

A: From the provided information, Sample size (n) = 508 37% would like to talk about school so the…

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: x-bar = 45.5, s = 4.81, N = 50   1.) 17% thought of the class thought I was younger than what age?…

A: Given that, x-bar = 45.5, s = 4.81, N = 50

Q: From the sample statistics, find the value of p1 - p2, the point estimate of the difference of the…

A: From the provided information,

Q: what range of raw scores makes up the middle 40%

A: The middle 40% means, the scores lie between 30th and 70th percentile. From stand normal, z-score…

Q: The formula for sample proportion is                                  p̂=??p̂=Xn Solve for n.

A: We know that,  The proportion of the sample is  p̂= X/n Then,  We will solve for n = ?

Q: i need 20 to be 30 for the sample section

A: The mean is 1.8 and the standard deviation is 0.5.

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A: From the provided information, Sample size (n) = 8 Level of significance (α) = 0.05

Q: Explain the sample mean of the difference scores varies.

A:

Q: student wants to know his average homework grade for the first half of his math class. There were 7…

A: Given data, 100,90,95,89,92,85,95 What is the population mean of his homework grades?

Q: Suppose that 19% of all athletes in a sport use a banned drug. A test is available that detects 88%…

A:

Q: America OnLine published a survey question. Among the 2,300 Internet users who responded, 20%…

A: From the given information, America OnLine published a survey question. Among the 2,300 Internet…

Q: company wanted to estimate the proportion of employees who use mass transit to get to work. The…

A:

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A: From the provided information, Sample size (n) = 8 Level of significance (α) = 0.01

Q: The Bangor Humane Society tracks cat adoptions closely. They sample 54 people who looked at cats…

A: Sample proportion = x/n Here x = 36 and n = 54

Q: tephanie is trying to figure out the sample size of an experiment. She knows the population SD is…

A: Solution: Given information: σ= 41.5    Population standard deviation σx= 2.7   Standard deviation…

Q: Find P₄₁ , which is the score separating the bottom 41% from the top 59%. P₄₁ =

A: It is given that the area is 0.41.

Q: Forty percent of players scored 8 points or Sixty percent of players scored 8 points or more - less…

A: Given that,The 40th percentile for points scored per player in a game is 8.That is,P40 = 8

Q: As part of a sixth-grade class project the teacher brings to class a large jar containing 200…

A: Given, Population size = 200 Sample size = 25 Red gumballs = 15 Green gumballs = 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.