If n=23, ¯x(x-bar)=34, and s=8, find the margin of error at a 99% confidence level Give your answer to two decimal places.

Q: There are 5000 observations in a data set. 10% of the data are “1”s, while the rest are “0”s. If we…

A: The data set consist of 5000 observations. The observations are 0's and 1's. An amount of data…

Q: A teacher gives a reading skills test to a third-grade class of n = 25 at the beginning of the…

A: Given The data is as follows: Sample size, n=25 Sample mean of difference, MD=12.7

Q: In a trial of 185 patients who received 10-mg doses of a drug daily, 48 reported headache as a side…

A: We have given that,  Favorable cases (X) = 48 and sample size (n) =185 Then,  We will find sample…

Q: A sample of n = 6 scores has a mean of M = 10. If one score with a value of X = 12 is removed from…

A: Given that  A sample of n = 6 scores has a mean of M = 10

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 9 for the population of…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: How would i find the p-value?

A: The test statistic is -1.41.

Q: A magazine provided results from a poll of 1500 adults who were asked to identify their favorite…

A: Given that a magazine provided  results from a poll of 1500 adults who were asked to identify their…

Q: The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample…

A: Given information- Population proportion, p = 0.25 Sample size, n = 460 No. of success, x = 103…

Q: For a class of 60 students, the marks obtained in last semester’s Accounting exam showed that the…

A: Given that third quartile, Q3 = 70 marks

Q: You collect data on number of alcoholic drinks consumed by community college students. After…

A: From the provided information, The z score for the sample mean is +0.45.

Q: A set of n = 5 pairs of X and Y scores has X = 15, Y = 5, and XY = 10. For these data, what is the…

A: For the set of 5 paired observations (i.e., n=5), it is given that:∑X=15∑Y=5∑XY=10

Q: Suppose the relationship between Y and X is given by: Y = 3.1415 + 6X + error By how much…

A: X and Y are two random variables such that Z=X+Y, then the relation of expectation of Z with…

Q: A set of n = 5 pairs of X and Y scores has X = 15, Y = 5, and XY = 10. For these data, what is the…

A: n=5, X=15Y=5XY=10We have to find value of SP

Q: n=550 x=440 90% confidence

A: Given that,  n=550 x=440  The sample proportion is, Critical values: By using the standard normal…

Q: Golf members have a median age of 39 years and an interquartile range of 12 years. What can you…

A: Given: Median Q2=39 years Interquartile range, IQR=Q3-Q1=12 years, .......(1)

Q: Jasmine was good at statistics but not so good at verbal aptitude.  She got her SAT score report in…

A: we have to find out  the Z-score correspondingto 34th percentile .

Q: The data for the height of women is approximately bell-shaped. If a woman’s height has a z-score of…

A: Given that  Z-score is -1.3

Q: None

A: To find the closest point zzz such that 36.98% of the observations fall above it, we assume the…

Q: The correlation between overall grade in the class and the scores on the final was 0.734. How much…

A: The correlation between overall grade in the class and the scores on the final was 0.734.

Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

A: From the provided information, Among 1000 respondents 13% choose chocolate pie and the margin of…

Q: A sample of n=5 scores has a mean of M = 12. if one new score with a value of x =17 is added to the…

A: Given information n=5 Mean M=12 Formula of mean is given by M=∑xin Where, xi are data points and n…

Q: Find the z score of the value 2.5 in the data set {1.90, 3.00, 2.5, 3.71, 2.12, 1.76, 2.71,1.39,…

A: From the provided information,

Q: In a population of exam scores, a score of X = 88 corresponds to z = 2 and a score of X = 79…

A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: How did it resulted to 0.8749 at letter b? As I review the z-score table, z = -1.15 is equivalent to…

A: Actually you have seen the table for for left tailed side i.e. P(Z < -1.15)  But we have to solve…

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: In the given case we need to find the minimum sample size that will give the margin of error equal…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than…

A: It is given that n is 1,817 and x is 400.

Q: A sample of n = 10 scores has a mean of M = 13. After one score is added to the sample, the mean is…

A: Solution-: Given: n=10,M=13 (old)We want to add one score in the sample, the mean is found to be M =…

Q: A confidence interval for the difference in the percent that men and women scored on their…

A: confidence interval = (-3 , 0.1)

Q: You sampled 20 students in a high school to try to predict the students' GPAs in 9th grade based on…

A:

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than…

A: From the provided information, The hypotheses can be constructed as: Null hypothesis: H0: p = 0.25…

Q: Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from…

A: Given regression equation is y=-107+1.03x If x=184 y=?

Q: What test would i run in excel? The data in Table 7–6 were collected in a clinical trial to…

A:

Q: The mean time for the 100 yard dash for adolescents is 12.04 seconds (M = 12.04, s = 4.1). A runner…

A: Given :  The mean time for the 100 yard dash for adolescents is 12.04 seconds (M = 12.04, s = 4.1).…

Q: A study done in 1997 showed that 4.7% of mothers smoked cigarettes during their pregnancy. An…

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Q: The predicted college GPA for a high school GPA of 3.8 and a college board score of 500 is (Round to…

A: The equation of the college GPA is y^=0.16+0.51x1+0.002x2. The variable x1 is defined as the high…

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Q: Lorraine was in a hurry when she computed a confidence interval mean. Because the standard deviation…

A: