Solution:
True.
Explanation:
To find it's z-score, the sample data must be shifted by substracting the mean of the population and then rescaled by dividing by the standard deviation of the population.
let,
X = sample data or raw score
= Population Mean
= Population standard deviation
Z-score = ( X - ) /
To find it's Z-score, the sample data must be shifted by subtracting the mean of the...
For a given raw score to be converted into a z score, one must know both the mean and standard deviation of the raw score distribution. True False
Find the sample mean and sample standard deviation of your data. What is the Z score? Pick three bills from the last 12 months and change the values into z-scores. What does the z-score tell you about that particular month? Between what two values would be considered a normal bill? Remember, being within 2 Standard Deviations is considered normal. Are any of your bills in the last 12 months unusual? Very unusual? Are there times when you would accept an...
Find the z-score for a data value of 243 in a dataset with a mean of 200 and a standard deviation of 25
QUESTION 2 When selecting a random sample, each score in the population a. must be sampled without replacement b. must have the same probability of being selected c. must be selected one time d. must have a random mean QUESTION 6 The standard error of th mean (SEMp) for sample means provides a measure of sampling error. a. True b. False QUESTION 10 A population has a mean, μ = 120 and a standard deviation, σ = 18. What is the...
Find the sample mean and sample standard deviation of your data. What is the Z score? Pick three bills from the last 12 months and change the values into z-scores. What does the z-score tell you about that particular month? Between what two values would be considered a normal bill? Remember, being within 2 Standard Deviations is considered normal. Are any of your bills in the last 12 months unusual? Very unusual? Are there times when you would accept an...
4. A variable is standardized in the sample a by multiplying by its mean b. by subtracting off its mean and multiplying by its standard deviation c. by subtracting off its mean and dividing by its standard deviation d. by multiplying by its standard deviation
12. Using a normal distribution and z score formula answer the following questions: a. Find the Z-score that cuts off the top 35% of the nornval curve b. Find the data value to the nearest whole number that cuts off the bottom 20% of the curve given that the mean is 75 and sample standard deviation is 5. c. Find the z scores that cut off the middle 50% of the normal curve. 13. This question is worth 4 points...
sample mean, sample s, variance, population s This data is from a sample. Calculate the mean, standard deviation, and variance. x 42.6 23.9 12.9 22.8 41.3 26.1 | 13.6 14.4 44.3 Please show the following answers to 2 decimal places. Sample Mean = 26.88 Sample Standard Deviation = Sample Variance = (Please use the standard deviation above for your calcul Ooops - now you discover that the data was actually from a population! So now you must population standard deviation....
find the indicated z score. the graph depicts the standard normal distrubution with mean 0 and standard deviation 1. # on graph is: 0.9875 EQuestion Help Find the indicated z score. The graph depicts the standard nomal distribution with mean 0 and standard deviation 1 Click to view page1 of the table. Click to view page 2 of the lable The indicated z score isi (Round to two decimal places as needed)
Consider a large population of interest. It's distribution is normal and it's mean is 184 and standard deviation is 109. Let X = a single observation. (Round all probabilities to four decimals) Consider a large population of interest. It's distribution is normal and it's mean is 184 and standard deviation is 109, Let X = a single observation (Round all probabilities to four decimals) a) Find P(X 189): le of 132 is taken. Let X = sample average of the...