Find the product of approximate numbers x, = 2.37 and x, = 20.3546 all of whose digits are valid. %3D Also find absolute and relative errors.

Q: Find the proportion of N.d. observations with a zz-score between z1​= 0.53 and z2​= 3.11. Give your…

A: given data z1=0.53 and z2=3.11

Q: How many of the following measures are quantitative?

A: A variable is said to be quantitative if it can be measured numerically and operations like…

Q: The scores of 40,000 county employees who took a recent civil service exam were normally distributed…

A: It is given that the scores follow normal distribution with mean 70 and standard deviation 10.…

Q: a. Assume that nothing is known about the percentage to be estimated. (Round up to the nearest…

A: a) If nothing is known about percentage to be estimated,  We will have a conservative estimate for…

Q: A researcher is analyzing data from a repeated-measures research study. If the researcher ran a…

A: The difference is, Subject 1st 2nd Difference #1 10 11 -1 #2 4 6 -2 #3 7 9 -2 #4 6 5 1…

Q: A recent study indicated that 20% of 133 women over age 55 in the study were widows.  a. How large a…

A:

Q: Calculate the p-value, using a t-ratio of -2.0991 and DF of 50. Please provide working. DO OT USE…

A: The null hypothesis is that the true population mean of some data set is equal to zero. The…

Q: If X ~ N(10,3), find the X value that is the 16th percentile.

A: From the provided information, Mean (µ) = 10 Standard deviation (σ) = 3

Q: A researcher reports independent-measures t statistic with df = 16.  How many participants were in…

A: The degrees of freedom formula for the independent-measures t statistic is, df=n1+n2-2 In the…

Q: A researcher reports an F-ratio with df = 29, 4 from an independent-measures research study. Based…

A:

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A:

Q: Hello. I appreciate any help. Thanks.

A: Standard Error of estimate:S=√MSEMean square error:The formula for the mean square error is,MSE =…

Q: A researcher reports an F-ratio with df=3,70df=3,70 for an independent-measures research study.…

A: Given: A researcher reports an F-ratio with df=3,70

Q: Following her hospital recovery, she decides to find out the distance she travelled during this…

A: GIVEN THE TIME AND VELOCITY  WE HAVE TO FIND LOWER ESTIMATE

Q: Ex. X = 400 Y = 700 Exr = 15, 000 Σε X2 = 16, 229 y2 = 50, 000

A:

Q: Find the maximum percentage error in an approximate number –4.5

A: the relative error in approximation is  relative error =absolute errormeasured value

Q: ..... The value of the test statistic is (Round to two decimal places as needed.)

A: Given :   sample size, n = 480 population proportion,p= 0.5 sample proportion…

Q: Can we support the claim that mean rainfall from seeded clouds exceeds 25 acre-feet? Use a = 0.01

A: Cloud seeding has been studied for many decades as a weather modification procedure. The rainfall in…

Q: Can you statistically put that something is within the 100th percentile? For examlpe a z-score of…

A: 100th percentile means that you have the highest test score possible. 100th percentile means you've…

Q: People who live near a former rocket-tes are concerned that perchlorate is preser unsafe amounts in…

A: mean = 24.5 n = 28 sample mean = 25.3

Q: Fourteen different video games showing drug use were observed. The duration times of drug use ​(in…

A: Given, n=14 df denotes Degree of Freedom.

Q: A researcher reports an F-ratio with df= 2, 18 from an independent-measures research study. Based on…

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

Q: The effectiveness of a blood-pressure drug is being investigated. How might an experimenter…

A: It is given that the effectiveness of blood-pressure drug is being investigated.

Q: The systolic blood pressure dataset (in the third sheet of the spreadsheet linked above) contains…

A: The variables x and y are average number of employees in a group health insurance plan and average…

Q: You sampled 13 people and got their pre-diet weight and post-diet weight. If α=.05α=.05, the test…

A:

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A:

Q: The sample mean x (with a bar above) is the best point estimator of the sample mean u(mu) True or…

A: Sample mean: The sum of the all observations of sample divided by the total number of observations…

Q: The margin of error is always greater than or equal to the standard error.

A: Given that, The margin of error is always greater than or equal to the standard error.

Q: Find the z-score associated with the ACT score X = 26 %3D Find the ACT score from the dataset…

A: Our aim is to find the following :  (a) Z-score for X=26 (b) ACT score for Z=1.064

Q: What does MS between reflects?

A:

Q: When estimating the true proportion, how large a sample is needed to be 95% confident that the error…

A: It is given that Margin of error E = 0.06 Level of confidence = 0.95 The critical value of Z at 95%…

Q: A reaction takes place that is expected to yield 171.9 g of product, but only yields 154.8 g. What…

A: Given that: Theoretical yield =171.9 g Practical yield =154.8 g Formula  The percentage error in…

Q: The z score length of a carrot is 1.5, what is the length of this carrot?  what percentage of…

A: We have to find  the percentage of carrots....

Q: 138 patients who received 10-mg doses of a drug daily, 33 reported headache as a side effect. Obtain…

A: We have given that Sample size n =138 Favorable cases x =33

Q: A doctor at a local hospital is interested in estimating the birth weight of infants. How large a…

A: Given information- Standard deviation (s) = 7 ounces Error (E) = 2 ounces The margin of error…

Q: The mean of the population is (Round to two decimal places as needed.)

A: The population is 508, 634, 545, 611 and 577.

Q: A raffle has a grand prize of a Alaskan cruise valued at $15000 with a second prize of a weekend in…

A:

Q: on a 100 item test romel got a score of 88 which is the 9th decile what does it mean

A: Di = i * (n + 1)  10 th data

Q: A researcher reports an F-ratio with df=4,98 for an independent-measures research study. How many…

A: A researcher reports an F-ratio with df=4,98 for an independent-measures research study.

Q: In a population with o = 8, a score of X = 44 corresponds to a z-score of z= -0.50. What is the…

A: Here, standard deviation is 8, X = 44, and z = –0.50.

Q: Average IQ scores for young school children are known to be 100 (SD = 15).  However, the literature…

A:

Q: To seethe effect of a relatively small error in the estimate of the amountof carbon-14 in a sample…

A: A bone fragment found in central Illinois in the year 2000contains 17% of its original carbon-14…

Q: When computing a 95% CI for a population mean, the ____ is used as the point estimate.

A: Given that  When computing a 95% CI for a population mean, the ____ is used as the point estimate.…

Q: Find the mean squared (MSE) of n X(1) for estimating 0. error 2

A:

Q: A researcher reports an F-ratio with df = 3, 56 from an independent-measures research study.  How…

A: An F-ratio is determined using sum of square for between groups with degree of freedom of between…

Q: (d) Use inverse interpolation with cubic interpolation and bisection. Compute the true percent…

A: Part(d): Given, fx=x21+x2fx=0.85 Solving the above by cubic spline we will get,…

Q: Find the relative error of p = 0.71 × 10-5 if its approximate value is p* = 0.70 × 10-5, and also…

A:

Q: From the values of the factors given below, find the corrected values of the first four Moments…

A:

Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: Here  sample proportion = 42/120= 0.35

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.