Find the margin of error for the given values of​ c, σ​, and n.   c=0.95​, σ=2.1​, n=81 E=_______

Q: Find out how many units the sample should consist of so that the standard error of the mean is not…

A: SD of population is given by 70

Q: a. Your friend claims to have ESP. You test her by having her predict the outcome of 20 coin tosses…

A: a). Here, only one proportion is testing whether it is equal to the population proportion of 0.5.…

Q: Consider the data set. 2, 3, 4, 6, 8 (a) Find the range b) Use the defining formula to compute the…

A: Given data set is 2,3,4,6,8sample size(n)=5

Q: a. Find the population mean. b. Find the population standard deviation. c. How many possible samples…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 33 - )) The standard deviation of a population of 200 volumes is 30cm. In the case of…

A: Standard Error of Sample Mean: The standard error in statistics is defined as the measurement of…

Q: 77) Assume that a sample is used to estimate a population proportion p. Find the margin of error E…

A:

Q: A sample is selected from a population with μ = 46, and a treatment is administered to the sample.…

A: A sample is selected from a population with μ = 46, and a treatment is administered to the sample.…

Q: d) Notice that to get smaller error and/or higher confidence, you need a larger sample. This result…

A: here use given information , standard deviation  = s = 7.5hour

Q: 23- The standard deviation of a population of 200 volumes is 30 cm. In the case of "non-refundable…

A: We have to find correct answer..

Q: ssume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation…

A: given mean μ=0 standard deviation σ=1

Q: 56 59 62 65 68 71 74 Test Scores Use the Empirical Rule to answer the following questions. a. The…

A: Empirical rule : An empirical rule is also known as 68 -95-99.7% rule.

Q: A population has a standard deviation of o = 24. a. On average, how much difference should exist be-…

A: Note: As per my policy i can answer only one question. kindly repost the remaining. 4) Given dataA…

Q: A study reports that 75 percent of young adults in a county get their news from online sources. A…

A: One proportion z test:   One proportion z test is used for comparing the observed population…

Q: What is the population parameter? Pick What is the point estimate for the population proportion? p =…

A: We have given that  Favourable cases(Hispanic/Latino), X = 68 Sample size, n = 400 Confidence level…

Q: A chi-square test for goodness-of-fit has a sample size of 50. What are the degrees of freedom for…

A: A chi square test for goodness-of-fit is a non parametric test. It is used to test whether there is…

Q: (b) Use the defining formula to compute the sample standard deviation s. Recall the defining formula…

A: Given the data  1, 6, 7, 8 , 9 n = 5 Mean, x=∑i xin              = 1+6+7+8+95              = 6.2

Q: Given a​ mean, standard​ deviation, and a raw​ score, find the corresponding​ z-score. Assume the…

A: Here we will find the z-score,

Q: 14 The standard error of the sample proportion is, a 0.0243         b 0.0233         c 0.0224…

A: Standard error explain the spread of the data from the population parameter. Standard error is the…

Q: Question 5

A: We know that ; 1] When Population Standard deviation(σ)  is known and sample size is sufficiently…

Q: Problem The mean and variance of a sample of n = 25 observations are 75 and 100, repsectively. Use…

A:

Q: A data set lists weights (Ib) of plastic discarded by households. The highest weight is 5.24 Ib, the…

A: The mean is 2.208 lb and the standard deviation is 1.971 lb.

Q: VI X has normal distribution and P(X>73.05) = 0.0289. Given that the variance of the distribution is…

A: Given Data: X~ N(Mean,  Variance) Sd=root(18)   P(x>73.05)=0.0289

Q: An individual's present route to work results in, on average, 40 minutes of travel time per trip. An…

A: Given: n=10 μ=40

Q: In a random sample of five observations, you obtained the following values for variable X. Whats the…

A: The sample size n is 5.

Q: MCQS: SSE or Sum of square erros show   A variations in between the populations   B variations…

A: a) Option e) is correct. SSE explains variations within the samples.   b)Option c) is correct. The…

Q: A variable of a population has a mean of u = 82 and a standard deviation of o = 18. a. Identify the…

A:

Q: You have a sample mean of 11, a population average of 17, and a standard error of the mean of 3.…

A: Givensample Mean(x)=11population average(μ)=17standard error(SE)=3

Q: Use the information provided to find the minimum sample size required to estimate an unknown…

A:

Q: In a random sample of five observations, you obtained the following values for variable X. Whats the…

A: Given: Observation Xi 1 1 2 1 3 4 4 7 5 7

Q: The dotplot below shows sample proportions from samples of size n = 35 from a population.…

A: A dot plot is provided which shows the sample proportions from samples of size, n = 35 from a…

Q: Using the Formula n = ME to Determine Sample Size When we want 95% confidence and use the…

A: Givenp=0.5C.I=95%margin of error(ME)=0.01

Q: . What statistical test should he use to analyze the data?

A:

Q: Assume that a sample is used to estimate a population proportion p. Find the margin of error E that…

A:

Q: A random variable X has a mean of 622 and a standard deviation of 13. By Chebyshev's theorem, the…

A: Given information: μ=622, σ=13 x1=596, x2=648 Use the formula for normal distribution:-

Q: f you are asked to conduct a test, you need to write all the 5 steps. Step I. write correct…

A:

Q: In a random sample of five observations, you obtained the following values for variable X. Whats the…

A: Given that  Observation  Xi 1 1 2 1 3 4 4 7 5 7 Sum of data values ( ∑Xi) =…

Q: DIRECTION . Find the sample size required to estimate a population proportion. 1. Confidence level =…

A: We have to find the corresponding confidence intervals?    Note :-According to bartleby experts…

Q: Consider the data set. 2, 3, 4, 5, 7 (a) Find the range. (Enter an exact number.) (b) Use the…

A: (a) Range is the difference between the highest and the lowest number in a data-st. Here highest…

Q: Ship Name Sanitation Score Adonia 96 Adventure of the Seas 93 AID Aaura 86 AID ABella 95 AID Aluna…

A: Note: As per my policy i can answer only one question. kindly repost the remaining questions Given…

Q: An individual’s present route to work results in, on average, 40 minutes of travel time per trip. An…

A: Given  mu=40,  We using t statistic because population variance not known

Q: The weights of people in a certain population are normally distributed with a mean of 153 lb and a…

A: Sampling distribution of Mean:   From the central Limit theorem, the sampling distribution of mean…

Q: When conducting a large sa (p – Po) Po(1- Po) where i for the denominator of this (A) The standard…

A: Consider, it is  known that for sufficiently large n ( greater than 30 )

Q: 36 - ))The standard deviation of a population of 400 volumes is 70 cm. In the case of…

A: SD=70 To Find: Sample size (n)

Q: 95%% Confidence, n=380, x =50 a O.0357 b) Oo 030l6 c)0.0408 d)0.0340

A:

Q: A data set lists weights (Ib) of plastic discarded by households. The highest weight is 5.50 lb, the…

A: The difference between 5.56 and the sample mean is difference=5.56-x¯=5.56-2.246=3.314

Q: The degrees of freedom used when testing two independent samples where the population standard…

A: Degrees of freedom(d.f): The number of independent observations in a set is known as degrees of…

Q: A data set lists weights (Ib) of plastic discarded by households. The highest weight is 5.72 lb, the…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A random variable r is normally distributed with a mean of five and a standard deviation of 2.5  a)…

A: Procedure for finding the critical value of z is listed below: Follow the instruction to obtain the…

Q: (a) Determine the sampling distribution of the sample mean X. (b) Find the mean E(X) of the sampling…

A: Here use basic concept of sampling distribution of sample mean

Q: In a random sample of five observations, you obtained the following values for variable X. Whats the…

A: The number of observations n is 5.

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.