for a normal distribution with mean 50 and std dev of 5.2 find P90
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A random variable follows a normal distribution with a mean of 825 and std. dev. of 224. What is the probability of gathering a sample of 25 observations and the sample average falls below 725 or above 925?
find amount within B) 1% of std dev 2% of std dev 3% of std dev Consider the following set of ungrouped sample data. Answer parts A through D. 3 3 3 4 0 2 1 5 570 (A) Find the mean and standard deviation of the ungrouped sample data. x= 3.3 (Type an integer or a decimal.) $= 2.058 (Type an integer or decimal rounded to three decimal places as needed.) (B) What proportion of the measurements lies within...
Mean and std dev of SAT scores of first year UCF students are mean =μ =1500, Std Dev = σ = 150, distribution is approximately bell-shaped symmetric. What percentage of students scored between 1350 and 1800? Find the minimum score of a student who scored among the top 2.5% student? Find the 16th percentile SAT score
Mean and St. Dev. Of a normal distribution are respectively 4700 and 500. Find the following probabilities . USE EXCEL. SHOW FORMULA P(x<=5500) P(x<=4500) P(x<=4900) P(x<=4300) P(x>5500) P(x>4500)
Female: Mean: 592 Std. dev.: 94 Male: Mean:628 Std. dev.:89 Calculate the interval corresponding to one, two, and three standard deviations. Type your work showing how you obtained these intervals. Keep the endpoints of the final intervals as whole numbers and clearly label and list these three intervals in your document as shown below: 68% interval (lower value, upper value) 95% interval (lower value, upper value) 99.7% interval (lower value, upper value)
Normal distribution. Mean and std are given. Probability equals to 0.3. What is X? mean value μ=11.979, standard deviation value 6.390
please find proportionthat lies within a) 1% of std deviation b) 2% of stf dev c) 3% of std dev What proportion of the following sample of ten measurements lies within 1 standard deviation of the mean? Within 2 standard deviations? Within 3 standard deviations? 2 2 3 4 3 5 Proportion which lies within 1 standard deviation - %
Given a normal distribution with mean equals 54 and st. dev. equals3, complete parts (a) through (d). Click here to view page 1 of the cumulative standardized normal distribution table.LOADING... Click here to view page 2 of the cumulative standardized normal distribution table.LOADING... a. What is the probability that Xgreater than49? P(Xgreater than49)equals nothing (Round to four decimal places as needed.) b. What is the probability that Xless than51? P(Xless than51)equals nothing (Round to four decimal places as needed.) c....
are there outliers? pc. Unawienno umna hundepat Cinco [TDCDD 40- 559'58 Mean - 614.41 Std. Dev. - N - 200 Adverts Frequency ales .00 +500.00 -1000.00 +1500.00 +2000.00 -2500.00 Advertising Budget (Thousands of Dollars) irplay GRAPH Giapie 40- Mean = 27.5 Std. Dev. = 12.27 N = 200 Frequency T -20 80 0 20 40 60 No. of plays on Radio
6. Assume that x has a normal distribution with the specified mean and standard deviation. Find the following probability: ?(10 ≤ ? ≤ 26); ? = 15, ? = 4 ___________________ Find the z-value such that 5.2% of the standard normal curve lies to the left of z. ___________________