The data for the height of women is approximately bell-shaped. If a woman’s height has a z-score of -1.3, what percentage of women is shorter than she is?

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: What percent of cans will have a caffeine content greater than 35 mg?

A: Let X be the random variable of the caffeine content of a cola.Given that,Population mean

Q: The average percentage of correct responses on last semester's Midterm was 78%.  What can be said…

A: The standard normal distribution: A continuous random variable Z is said to follow standard normal…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

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: The top schools HCC students transfer to are below from highest to lowest.  This type of data is…

A: We have given the following statement

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current…

A: (a) The null and alternative hypothesis is given by; H0: μ=40H1: μ>40 (b) Since in the…

Q: What proportion of z scores lie beteeen -2 and +2 in the height in inches data set? Round your…

A:

Q: se technology to calculate the P-value P-value = (Round to three decimal places as needed.)

A: Given that  Sample size n1=1120 , n2=1048 Sample proportion p1^=0.47 , p2^=0.46

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current…

A: Given  n=44, x̄=40.76, s=5.12  Note: According to Bartleby guidelines expert solve only one question…

Q: the mean = 146, and s =  35 Question #3 A percentage of female students with scores between 41 and…

A: From the provided information, Mean (x̅) = 146 Standard deviation (s) = 35

Q: What is the z-value and area if score is 70 ?

A: The score is 70

Q: What is the percentage of scores that lie between a z score of -2 and a z score of 1?

A:

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: According to a study done in 2010, the mean number of sexual partners was 7.6. However, a…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: Between the mean and median, determine which would be a better estimator given that a sample…

A: The sample mean is, x¯=∑xn=3+8+26+14+125=635=12.6 The data in the ascending order is 3, 8, 12, 14,…

Q: Suppose you have information about average heights of a random sample of airline passengers. The…

A: Given: The mode is 68 inches, the median is 69 inches, and the mean is 65 inches. We need to convert…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current…

A: given data, n=43x¯=40.49s=2.89claim:μ>40α=0.05

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: figure to the nght, hich shows the percentages of adults from several countries who favor building…

A: The survey included the random sample 1125 adults from country A, 1003 adults from country B, 1019…

Q: John calculated r -.44 for a set of n 10 pairs of values that represent the number of absences from…

A: Given that r = -0.44 midterm exam score ( y )   number of absences from class (x)

Q: Suppose an estimator for a window supplier made a mistake in measuring by inputting the width of a…

A: Is cost of window is p dollar/inch2 And lengh of window is l Then total lose =lp dollar

Q: For a set of 250 measurements the mean is 110 and the variance is 144, how many of these…

A: Mean = μ = 110 Variance σ2 = 144Standard deviation = σ = σ = 12

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: Let p, represent the population proportion for Country C and p2 represent the population proportion…

A: Given that Sample sizes  for country C and country D n1=1024 , n2= 1078 Level of significance =alpha…

Q: dentify the claim and state Ho and H. The claim is "the proportion of adults in Country C who favor…

A: Given that  Sample sizes for Country C and D n1=1024 , n2= 1078 Level of significance =alpha = 0.09

Q: The mean GPA for 138 residents of the local apartment complex is 1.9. What is the best point…

A: Solution: From the given information, the mean GPA for 138 residents of the local apartment complex…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North American catfish. The current…

A:

Q: Data was collected on the number of pairs of shoes people on and the number of miles they walk per…

A: Determine whether the given statement indicates true or false.   The correct option is identified…

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050 females, 746…

A: There are two dependent variables which are males and females. The independent variable is using of…

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: the average (mean) score on an exam was 76.52 in a class consisting of 14 supply chain students and…

A: Answer:- Given, A class consisting of 14 supply chain students and 11 HR students.  That is, Total…

Q: Suppose X ∼N (-4,1. Between what xx values does 99.72% of the data lie?

A: Given: X ∼N (-4,1 ) To find: Between what xx values does 99.72% of the data lie?

Q: A sample of n = 11 scores has a mean of M = 55.  One new score is added to the sample and the new…

A: It is given that , A sample of n=11 has a mean of M =55.

Q: IQ is normally distributed with a mean of 100 (SD = 15). What score would a person need to be in the…

A: Let X denote the IQ scores and it follows normal distribution with mean of 100 and standard…

Q: A machine makes sticks of butter whose average weight is 4.0 ounces. The SD of the weights is 0.05…

A:

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: one percent of grades are greater than what z-score?

A:

Q: If a person’s z score equals 2.08, what is their percentile?

A: Given info: The person’s z score equals 2.08.

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: The data show the chest size and weight of several bears. Find the regression equation, letting…

A: For the given data Find the regression equation The best predicted weight for a bear with a chest…

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.