ster, the following grades were recorded. Calculate the chi-square test statistic x used to determine if the grade distribution for the department is different than expected. Use a = 0.01. А в СD F Number 42 36 60 8 14 Grade О 341 O 6.87 O 5.25 O 4.82

Q: The time for degree completion was record below. Years 4 6 5 6 5 8 Calculate the standard…

A: Calculation:The number of observations on time for degree completion (years) is, n = 6. Denote xi as…

Q: The mean is u: = and the standard deviation is o: =

A: Given,

Q: The range of the sample data is (Round to one decimal place as needed.)

A: The maximum value of the data set is 10 and the minimum value is 1.

Q: An assembly-line machine turns out washers with the following thicknesses (in millimeters). Find the…

A:

Q: Convert the following to T-score: a. Raw score of 110; mean of 55; SD of 19 b. Raw score of 85; mean…

A:

Q: A bottled water distributor wants to d nationally known water bottling com standard deviation of the…

A: Solution

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated

A: We have to find the standard deviation based on the given frequency distribution.

Q: . a. Bidwell Electronics, Inc. recently surveyed a sample of employees to determine how far they…

A: Given : Distance(miles) Frequency 0-5 4 05-10 15 10-15 27 15-20 18 20-25 6

Q: find the V av iance and St andard deviation

A: We have Given a pdf of X whereas X is a continuous random Variable. The expected value or mean is…

Q: A local bakery makes wheat bread. The number of grains of wheat in the bread is normally…

A: Let X denote the number of grains of wheat in bread. Given that X follows N(mean = 11.4, SD = 1.3),…

Q: a department store on average, has daily sailes of $29,395.82. the sandard deviation of sales is…

A: Given that, Mean, mu= 29395.82 And standard deviation, sigma= 2000 We know that, z score is given…

Q: A sample of the number of sick days used by employees at a clinic is as indicated: 0,    0,    1,…

A: Given data 0,0,1,1,2,4

Q: The duration of routine operations in a certain hospital has approximately a normal dist with a mean…

A: Let X be the duration of routine operations in a certain hospital has approximately a normal…

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

A:

Q: For a data set of 133 values, a histogram created based on Sturge's Rule would have how many bins?

A: Given information: Number of observations. in data set = 133 Sturge's Rule is method of choosing the…

Q: The weights of 1,000 children average 50kg and the standard deviation is 5kg. How many children…

A: Given  mu=50, sigma=sd=5, n=1000 We want to find How many children weigh between 40kg and 55 kg?

Q: average heigth is 163 cm, standart deviation is 10 cm. compute p(X>168 cm) ?

A: Given,μ=163σ=10P(X>168)=?

Q: The length of one pencil is measured with a ruler, the following measurements are obtained; 5.33 cm,…

A: Consider the obtained measurements when a pencil is measured by a ruler 5.33 cm, 5.58 cm, 5.45 cm,…

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Enter a number.…

A:

Q: In a mango farm of 250 trees, the mean harvest is 96.5 kilos of fruit per tree with a standard…

A: Given,sample size(n)=250mean(μ)=96.5standard deviation(σ)=8.4

Q: Calculate the standard error of the mean (SE), rounded to 2 decimal places, given n = 202 and s2 = 9…

A: Given :n = 202 s2 = 9 cm2 We want to find standard error of the mean. The formula for standard error…

Q: The measure of dispersion which shows the variation about the me O a. Standard deviation O b.…

A: The coefficient of variation (CV) is a statistical measure of the dispersion of data points in a…

Q: Answer the following by using the z-table from class. Roadworthy tires last an average of 30,000…

A: The provided information are: Population mean (μ) = 30,000 Population standard deviation (σ) = 2500…

Q: Find a 95% CI on the population standard deviation of speeds of drivers ticketed in a 55 mph zone…

A: Confidence interval population standard deviation :  A confidence interval is an statistical…

Q: Test Score Frequency 90 80 4 70 60 6 50 3

A:

Q: Use the following information to answer the question. The mean age of lead actresses from the top…

A: Given that, μ=29.6 yearsσ= 6.35 years Let X denote the distribution of the actresses ages is…

Q: Give the range of mass in which 95% of the data falls. the standard deviation is 49.0 and the mean…

A: A range in which the value lies for the data is called as confidence interval . Here , 95% of…

Q: A piece of metal was weighted on a laboratory balance 4 times and gave the following results: 15.75,…

A:

Q: The average number of acres burned by forest and range fires in Malibu is 6,300 acres per year, with…

A: It is given that the mean is 6,300 and the standard deviation is 1,750.

Q: Suppose the measurement of 800 items are normally distributed with mean 66 cm and standard deviation…

A:

Q: A group of students take a exam and the adverage was m = 90 and the standard deviation was 7.8.…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: 4. Compute the average deviation on the data below Test scores X-Х bar Xi 57 60 65 70 78 s0 82 85…

A: 4. Formula for Average deviation is, Average deviation=∑x'n Where x'=x-x¯ x¯=∑xin  , n=10…

Q: Below are the ages of every resident of a very small assisted living facility. Find the standard…

A:

Q: eights were measured from 35 college students in September and April of th ar.What statistical test…

A: Weights is the continuous quantity and if the population follow normal distribution then the two…

Q: .Use the data to lation mean and andard deviation

A: x (x-xbar)^2 92 22.09 103 39.69 99 5.29 108 127.69 86 114.49 94 7.29 90 44.89 102…

Q: (b) How large an SRS do you need in order to reduce the standard deviation of x to the value you…

A: From the provided information, Population standard deviation (σ) = 6.6 Margin of error (E) = 0.9…

Q: The following histogram shows the scores on the first statistics exam. 21 i How many students took…

A:

Q: Fill in the missing values for this ANOVA summary table round to two decimal places: S.S. d.f. М.S.…

A:

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Enter a number.…

A: The given table is as follows:

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

A: Given Information:

Q: A sample of 314 patients between 38 and 82 were given a drug intended to reduce their level of…

A:

Q: Fill in the missing values for this ANOVA summary table: S.S. d.f. M.S. F Between 2.424 Within 2494…

A: We know, F=MS(Between)MS(Within)⇒MS(Between)=F×MS(Within)=2.424×58=140.592 Thus, MS(Between)=140.592…

Q: The following data give the speeds (in kilometer) as measured by radar of 5 selected cars traveled…

A: The data shows the speeds (in kilometer) as measured by radar of 5 selected cars traveled at NLEX.

Q: The mean IQ score for 1800 students is 90, with a standard deviation of 10. Assuming the scores have…

A:

Q: 1) The speed of 100 cars was measured on a road with a speed limit of 90 km/h. The data was found to…

A: We have to find probabiities..

Q: The mass of each 60 peddles collected from a beach was measured. The results, correct to the nearest…

A: Solution a) mean

Q: The diameter of a basketball is normally distributed, with a mean, u, of 9 inches, and a standard…

A: The distribution of the diameter of basketballs given as, N(µ=9, σ=0.5).

Q: The heights of male MIAT student are normally distributed with mean 1.7 m and standard deviation 0.2…

A: According to the given information, we have Mean = 1.7 Standard deviation = 0.2

Q: the heights of 200 plants in a garden follow a normal distribution with mean of 72.3 cm with a…

A: Formula : Z =(X - μ)/σ

Q: Suppose the measurement of 800 items are normally distributed with mean 66 cm and standard deviation…

A: