The percentile rank of the data value with z = 2 using the empirical rule is ? (rounded to one decimal place).
Q: When would the mean grade in a class on a final exam be considered a statistic? When would it be…
A: The difference between a statistic and a parameter is that a sample is defined by statistics. A…
Q: Mean u = Ex P(X) = Variance o? = [Ex² P(X)] – µ² = Standard Deviation o = Is the estimation of math…
A: Here, x denotes number of students. Mean:…
Q: The weights for a baby boy is normally distributed with a mean score of 7lbs and a standard…
A: As you mentioned g bit so i have solved only g bit.
Q: For males in their 30s, the distribution of cholesterol readings, in mg/dl, is normally distributed…
A: If the data follows normal distribution, then1. 68% of observations lie between mean ± 1 SD,2. 95%…
Q: What is the mean of a distribution that has a standard deviation of 16.5 if a PERFORMANCE value of…
A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…
Q: A sample of 100 individuals has a mean depression score of 20 with an SD of 2. What is the standard…
A: The formula for calculating the standard error of the sample is,
Q: The sample mean x (with a bar above) is the best point estimate of the sample mean u (mu) True or…
A: given The sample mean x (with a bar above) is the best point estimate of the sample mean u (mu)
Q: what will be the value of X at the z score =-2.5 given, mean=45 and standard deviation =5?
A: Mean = 45 Standard deviation = 5 Z score =-2.5 We have to find X score for given data...
Q: A national achievement test is administered annually to 3rd graders. The test has a mean score of 80…
A: A national achievement test is administered annually to 3rd graders. The test has a mean score of 80…
Q: At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of…
A: Given problem Given that At a local high school, GPA's are normally distributed with a mean of…
Q: Use the empirical rule for finding the percent of data, which are normally distributed, that lie a.…
A: Empirical rule : 68% area covered within 1 standard deviation of the mean. 95% area covered within 2…
Q: Based on this graph what was the approximate distribution of the averages? X~___(___,___)
A: Central limit theorem (CLT): According to CLT, for a given sufficiently large sample size from a…
Q: If a person is making the third quartile salary for a CPA they are making less than what perc
A: Given: As,
Q: Find the percentile points under the normal curve of each of the following then show their graphical…
A: (1) Obtain the value of 37th percentile. The value of 37th percentile is obtained below as…
Q: Assume that the distribution of residuals is approximately normal with mean 0c m and standard…
A:
Q: Apply Chebyshev’s rule to solve. A quantitative data set of size 200 has mean 20 and standard…
A: It is given that the sample size is 200, the mean is 20 and standard deviation is 4.
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: isn't it should use the normal table to find z value?
A:
Q: Find the 30th and 98th percentile values of a normal variable with Mean of 12 and Variance of 3 (if…
A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…
Q: Based from the gathered data on the height. Answer the following by converting to z-scores using the…
A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…
Q: For a population with a standard deviation of o = 12, a score of X = 44 corresponds to z = -0.50.…
A:
Q: Please also explain why you determined whether or not the results are statistically significant. A…
A: From the given information we find the solution.
Q: Calculate Mean Deviation (i) from Mean () (ii) from Median () for the given data and verify that…
A: Given: x f 2 3 4 9 6 5 8 2 10 1
Q: A matched-subjects experiment produced at statistic with a df of 13. How many subjects participated…
A:
Q: SAT scores are normally distributed with a mean of 1,800 and a variance of 22,500. Given arandom…
A:
Q: The average weight of an elephant is 6.42 tons with a standard deviation of 1.07 tons. Use the…
A:
Q: Apply Chebyshev’s rule to solve. A quantitative data set of size 80 has mean 30 and standard…
A:
Q: Find the proportion of Normally distributed observations with a zz-score below 0.82. Give your…
A:
Q: Using this information, what was the residual standard deviation (Se) found in your analysis?
A: Here given , analyzing a dataset of 77 data points investigating relationship between the number of…
Q: The distribution of weights for 12-month-old baby boys in the US is approximately normal with mean u…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: The test scores for a class of 155 students are computed. What is the location of the test score…
A: Given that The test scores for a class of 155 students are computed n=155 Find the location of the…
Q: The lengths of a large stock of titanium rods follow a normal distribution with a mean (u) of 440 mm…
A: Given that, The lengths of a large stock of titanium rods follow a normal distribution with a mean…
Q: Use the output provided in the formula sheets folder. Using the reduced model, what is the value of…
A: Based on given output we have to determine the estimate of standard deviation i.e S
Q: Identify the data value corresponding to the indicated percentile. The amount of sleep an adult gets…
A: The normal distribution:A continuous random variable X is said to follow normal distribution with…
Q: Show that the correlation coefficient is independent of the origin of reference and the units of…
A: We need to to prove that correlation coefficient is independent of the origin and units of…
Q: Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg,…
A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer first…
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: Find an approximate z score corresponding to a percentile of 0.33 to its RIGHT.
A: The approximate percentile to the right of 0.33 is 0.67.
Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…
A:
Q: What is your best estimate of the correlation coefficient shown here?
A: A scatter plot provides the idea about the form, direction, and strength of the relationship between…
Q: What is the Fratio for these data?
A:
Q: State the empirical rule as specialized to variables.
A: Empirical rule- It is also called as 3-sigma rule, because in this all the data falls under 3…
Q: The data set of size 40 has mean 15 and standard deviation 2. Approximately how many observations…
A: Given Information Mean (µ) = 15 Standard deviation (σ) = 2 Finding the probability for scores that…
Q: From the following data calculate (i) Correlation coefficient (ü) Standard Deviation of Y (Gy) X=85…
A:
Q: Based on this graph what is the approximate distribution of data? X~___(___,___)
A: From the data given,we try to create the histogram of the data.
Q: The Mean, Mode and Q.D. of a distribution are 42, 36 and 15 respectively. If its Bowley's…
A: Given that Mean=42 Mode=36 Q.D=15 We have to find the values of two quartiles: And after that we…
Q: The data set has mean 15 and standard deviation 2. Approximately what percentage of the observations…
A:
Q: On an exam with u = 52, you have a score of X = 56. Which value for the standard deviation would…
A: We have given that µ = 52 x = 56 z-score formula is given as z =( x - μ )/σ
Q: The distribution of weights for 12-month-old baby boys in the US is approximately normal with mean u…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
The percentile rank of the data value with z = 2 using the
Step by step
Solved in 2 steps with 1 images
