Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly selected group of 200 parents whether or not they use cloth diapers. What is the parameter?

Q: A group of 100 people, who lived at varying distances (in kilometers) from an island nuclear power…

A: Given that there are 100 people. Therefore, the table becomes,    0-3 km distance 3-6 km distance…

Q: ) Danny has scored 78, 74, and 72 on the first three exams in his math class. If the standard…

A: Calculate total marks obtained in 3 exam

Q: In a large data set, the 49th percentile is 523 and the 71st percentile is 675.  About what…

A:

Q: For a population with  σ = 8,  X=13 and a z-score = 2.21, find the value of µ

A:

Q: In a pharmaceutical company, the proportion of injection bottles found defective were 0.2, 0.1, 0.8,…

A:

Q: The U.S. Air Force requires that pilots have heights between 64in and 77in. The heights of women are…

A: Obtain the percentage of woman meeting the height requirement. The percentage of woman meeting the…

Q: The 70th percentile of the data presented in the table above is

A:

Q: How large the sample size should be in order to be 98 percent confident, if the sample proportion is…

A: Given data, p=0.78 E=0.16 z-value at 98% confidence is Zc=2.326 n=?

Q: What is the CALCULATIONS FOR THE t TEST?

A:

Q: Nick makes the first quartile salary for an actuary and Dylan makes the first quartile salary for a…

A: From the given box plot:   First quartile for CPA salary= $35,000   First quartile for Actuary…

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

A: There are two independent samples which are Country B and Country C. We have to test whether the…

Q: е. Find her percentile scores for the two exams. (use R-code)

A: The score of Mathematics is 94.6 and the score of  Physics is 93.7 Mean score of  mathematics 86.1…

Q: For the data 100, 500, 300, 100, 2000; the most effective measure of location is

A: The measures of location are median, quartiles and percentiles. The median is also known as second…

Q: In a class of 50 students, Heather has a rank of 14. At what percentile is she? Heather has a…

A: According to the provided information, B = 14 N = 50

Q: The indicated z score is

A: Given a standard normal distribution graph with mean 0 and standard deviation 1.  We need to find z…

Q: What is the scale factor

A: Here we have to find the Scale factor,

Q: d. The managers of a local luxury hotel would like to set the hotel's average daily rate at the 75th…

A: Let P75 denote the 75th percentile i.e below which 75% of hotels rate are set.

Q: . What is the p-value?

A: here given  Sample mean  = 24 mph  Sample standard deviation  =  2.2 mph  Sample size  = 14  here…

Q: What is the measure of PD?

A: From the figure  FD is diameter , Therefore, ∠FED=90∠FEP+∠PED=9035+∠PED=90∠PED=90-35∠PED=55

Q: What is p value ?

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

Q: At SKYCTC, the average class size is 22. A recent survey of five math classes showed the average…

A: Parameter:Any statistical measure based on all units in the population is called Parameter.Here, the…

Q: Find the measures.

A: Known fact: A shape polygon with 4 equal sides is called square. Given that WZ=27. That is, side of…

Q: a. What percentage of adult men can fit through the door without bending?

A: Let , X be the height of men. Here , X→N(μ=67.1 , σ=3.6) Since , the door height is 56.2 in. Our aim…

Q: What percentage of candidates will likely score below ftable is given as State of Nature Decision S1…

A: *answer:

Q: What is the measure of b?

A:

Q: What is the scale factor?

A:

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…

Q: For paired observations, the value of the average difference is?

A: Detaild Explanation Given In Attached File kindly Refer.

Q: The heights (at the shoulders) are: 600mm, 470mm, 170mm, 430mm and 300mm. Find out the Mean, the…

A: Here, x x-x (x-x)2 600 206 42436 470 76 5776 170 -224 50176 430 36 1296 300 -94 8836…

Q: What is the P value?

A: We have given that  p0=39/(32+39)=0.5493 α=0.05

Q: Determine the skewness of the data below Frequency 1 1 2 10 6 4 5. 3. 3.

A: Given: The provided data is: X Frequency 0 1 1 5 2 10 3 6 4 3 Assuming the data is a…

Q: A firm produces bolts whose length x is normally distributed with a Me = 78.3 mm and a SD = 1.4mm.…

A: Given information- Population mean, µ = 78.3 mm SD = 1.4 mm Let X be the length of the bolt produces…

Q: What is the measure of YZ?

A:

Q: If the average of z and 5z is 30, what is the value of a?

A: Given that avarage value of z and 5z is 30.

Q: What is the column proportion, D, for students who find SAS difficult to learn and who are somewhat…

A: The number of students who find SAS difficult to learn and who are somewhat proficient is 15.

Q: CT 977 There were approximately 28 million adults in Canada when this survey was conducted. Give an…

A: We have given that Sample size = 1008. Value of X =28. Margine of error=3.1%. We need 95 %…

Q: Consider the following data on x = weight (pounds) and y = price (5) for 10 road-

A: Given information: Given data represents the values of the variables X = Weight and Y = Price for a…

Q: the highest data of 50 leaves is 150mm and the lowest is 118m the desired class size is 9

A: Given  N=50 Highest value=150  Lowest value=118  Class size=9

Q: MJ took a sample of 50 pieces of data. She added up all of the pieces of data and then divided by…

A: The objective is to determine which measure of central tendency is used in the given scenario.…

Q: d. Calculate the 20th and the 30th percentiles.

A: Percentile/centile is a partition value where the percentage of scores falls below a specified…

Q: What is the scale factor ?

A: Given ,  We have to find scale factor

Q: What is the p value ?

A: Note: As per the requirement solving  From the available information, The observed frequency for the…

Q: What is the p value and z value?

A: The sample sizes are 400 and 500.

Q: The percentage of scores falling below a z-score of .65

A:

Q: What about the p value and t values

A: From the given output, the sample size n is 15.

Q: What is the Scale factor

A: The old coordinates B=(0,2), C=(3,0) So the length of BC=(0-3)2+(2-0)2=9+4=13 The new coordinates…

Q: A fire insurance company wants to relate the amount of fire damage in major residential fires to the…

A: Given: x y 3.4 26.2 1.8 17.8 4.6 31.3 2.3 23.1 3.1 27.5 5.5 36 0.7 14.1 3 22.3…

Q: Given μ=25and σ=4.8,what would be the x-value for the twenty-fifth percentile?

A:

Q: the best measure of dispersion is

A: the best measure of dispersion is

Q: A group of 100 people, who lived at varying distances (in kilometers) from an island nuclear power…

A: The expected values in a Chi-Square test for independence are the values that are expected to be…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.