n = 130 x= 69 p'=xn=0.5307 p=p' ±Zαp'(1-p')n =0.5307±1.645*0.04377=0.5307±0.07200=(0.458,0.6027)

Answered: 90% confidence

Math

Statistics

90% confidence

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: assume we have a cycle-servixe level of 90%, and we deliver 4 items on a customers order, what is…

A: To find the overall customer service level for the order, we need to consider the probability of…

Q: How do you solve this? There are 92 1's and 28 2's (total is 120)

A: Total sample size is Number of 1's is 92.Number of 2's is 28.

Q: mean of scores for a test = 300 SD = 100 10% of students that achieve a score higher than k are…

A: Mean()=300standard deviation()=100

Q: Score on last attempt: 0.3 out of 1 (parts: 0.25/0.25, 0/0.25, 0/0.25, 0/0.25) Score in…

A: Given Data

Q: How do I run a the test of normality? Assumptions of normality

A: Introduction:Several tests of normality exist, using which you can verify whether a particular data…

Q: Two dice are rolled. Find the probability of getting A. A sum of 5,6,7 B. Doubles or sum of 6 or 8…

A: Sample space for rolling two dice:It is given that two dice are rolled. The number of possible…

Q: Water Temperature If the variance of the water temperature in a lake is 25°, how many days should…

A: From the standard Normal table, the value of z for 95% level is 1.96.

Q: A DNP student wants to evaluate the change in knowledge scores of a group of cardiac patients after…

A: In given problem, a DNP student obtains a pretest at the beginning of class and immediately after…

Q: Can someone explain the formulas needed for this equation A nurse at a local hospital is…

A: Given Confidence Level = 98% True Mean is within 4 ounces Standard deviation, σ = 7

Q: Can you provide a formula with an example for solving with Anova?

A: Let\'s take a dataset of 3 groups with 12 observations. Hypotheses can be set as shown below.

Q: Using a z-table find the Z score for the 20th percentile and the 99th percentile

A: Here we have to find the 20th percentile and 99th percentile using Z table. Where Z is standard…

Q: what is the difference between t-statistic and z-statistic ? Compare the t-statistic formula and the…

A: z-statistic is average calculated difference in units of S.D. t-statistic is average calculated…

Q: When you post a picture on social media, it seems like your friends randomly "like" the picture.…

A: Givenp=27.5%=0.275Let "x" represent the no.of pictures you post until one is…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: sample size(n)=502sample proportion()=0.62claim is most of adults would erase all of their personal…

Q: Knowledge studies of pregnant women (n = 1000) found that the mean value of folate intake was 247ug…

A: Given Data: n=1000 σ=98

Q: This Test 70 pts possible Suppose a study reported that the average person watched 2.68 hours of…

Q: 16.8 4) What percentage of students would you expect to have scored above 19 on the exam? 5) Troy…

A: The mean is 23 and the standard deviation is 2.

Q: Research determine that 70 Puffs tissues is the average nimber of tissues used during a cold.…

Q: The recommended daily dietary allovance for zinc among males older than age 50 years is 15 mg/day.…

A: Given information Sample mean x̅ = 11.2 Population mean µ = 15 Sample size = 115 Standard deviation…

Q: Cardiovascular DiseaseSuppose the incidence rate of myocardial infarction (MI)was 5 per 1000 among…

A: Given, out of 15 new MI cases,5 died within 24 hours. Thus, X=5 and N=15 Therefore, Hypothesis to…

Q: What is the observed z/t score?

A: Given that Sample size (n) = 35 Sample mean = 41 Population mean = 40 Population standard deviation…

Q: Cardiovascular Disease Suppose the incidence rate of myocardial infarction (MI) was 5 per 1000 among…

Q: negative value for a t statistic: (one or more answers) A) Is impossible B) Can be used to…

A: We have to determine which statement is true for given situation.

Q: When using paired t test to compare two means, what is a good t value? Is t = 2.9 a high t value?…

A: Given information: t = 2.9

Q: To test the effect of a new diet on weight loss, a cardiologist has all his patients follow the diet…

A: The valid variable provides the validity of the experiment result. The unknown third variable does…

Q: Hypothesis: There is a significant difference between the perceptions of politicians and businessmen…

A: Given: Test-statistics=±2.37 α=0.05

Q: true proportion of voters in favor of a referendum is unknown period a random sample of 200 voters…

A: Formula : Point estimate = p̂= x/n

Q: In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the…

A: The answer is attached below,

Q: The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An…

A: Given ,population proportion (P) =0.152sample size (n)=594No.of report experiencing migraines(X)=71

Q: How can the split-half reliability be computed

A: When a single variable is measured with a test that consists of multiple items, the internal…

Q: The z-score of student having a score of 75. O 0.556 O 0.672 O -0.556 O -0.752

A: Given that the score is 75

Q: The null hypothesis that there is no relationship between the amount of coffee consumption and GPA…

A: from given data we have : The null hypothesis that there is no relationship between the amount of…

Q: Still learning? As in Exercise 25, assume that yourchance of passing the driver’s test is 34% the…

A: It is given that only 34% of candidates pass the road test in the first attempt and 72% of…

Q: Basic computation: z score

A: Solution: Let X be the random variable with mean µ and standard deviation σ.

Q: step 4 can you calculate the p value without using excel? need to be able to do on a test without…

A: From given data n=19 so, degree of freedom is df=n-1=19-1=18

Q: What is p value ?

A: The P-value is the probability of observing difference in the sample statistic this high or higher…

Q: Avoiding an accident when driving can depend on reaction time. That time, measured in seconds from…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: Determine the degree of freedom, right tailed area, t value Percentile - 99.5th n - (13) df - 23…

A: Given that Percentile=99.5% df=23 Find n , Right-tailed area , tcrit

Q: X~N(12,3) Find the 87.7 th percentile X.

A: Obtain the value of the 87.7th percentile X. The value of the 87.7th percentile X is obtained below…

Q: Estimate population proportion: New York Times poll found that 329 out of 763 adults said they would…

A: Given Information: n = 763 x =329 Confidence Interval = 88%

Q: Can you help figure out what percentile 78/345 is please? I need to know if it is above 80% .

A: Percentile: The value below which a percentage of data falls is known as the percentile. The formula…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

Concept explainers

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.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Basics of Inferential Statistics$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

A test of the claim that the proportion of students taking more than 9 units is more than 42% produces the test statistic z = 1.76. Find the P-value.
attached a picture!
The first test a doctor would order to determine whether a person is infected with HIV (the virus that causes AIDS) is the ELISA test. It detects antibodies and antigens for HIV. A study in Statistical Science by J. Gastwirth estimated that, if the person is actually infected with HIV, this test produces a positive result 97.7% of the time. If a person is not infected with HIV, the test result is negative 92.6% of the time. According the the US Centers for Disease Control (CDC), an estimated 1.1 million Americans out of a population of 321 million were infected with HIV in 2015. Using the information above, determine the probability that a randomly selected person whose ELISA test is positive actually is infected with HIV? a. What is the probability that a randomly selected American is infected with HIV? b. Using the answer to part (a) and the conditional probabilities of positive and negative ELISA test results, fill out the contingency table below: ELISA Test Result…
standard comparison test
Check if mu answer is correct. Please show correct answer only
Life on Other Planets Forty-eight percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 130 randomly selected individuals and found 52 believed that there is life on other planets. At a=0.05, is there sufficient evidence to conclude that the percentage differs from 48%? Use the critical value method with tables. Do not round intermediate steps. Part: 0 / 5
Using the z-table, determine the z-score that has 15% of the area to the right of it
Canon says their standard ink cartridges should print an average of 1062 pages before needing to be replaced, but Lexmark wants to prove that it is actually less than that. They take a sample of 70 identical printers with Canon ink cartridges and find the mean number of pages printed was 1041. .05, does Lexmark have enough evidence to say that Canon's claim is false? 59 and a Using s
Failure rate for (16) students who took a mathematics test, of whom (12) students passed?? which is (25% 40% (7% 75)).
Determine the necessary sample size. A study is being conducted to estimate the proportion of people who plan to travel over 100 miles at some time during the holiday season. What is the smallest number of people that should be surveyed in order to be 95% confident that the true proportion is estimated to within 4%? (Hint: use a 'worst case scenario' of p=0.50) O 601 1024 O 2401 1068 1503
How do I find confidence levels
How do you identify the chi sq & the p-value? How will you interpret the p-value?