The random variable X designates to time between calls to the emergency telephone number 911 The average time is 5 times per one hour. At some point, someone starts a stopwatch. Find the hilits uteo 1te 0113
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- The total blood cholesterol level was measured for each of 21 adults. Here are the 21 measurements (in mg/dL). 131, 139, 152, 161, 163, 165, 176, 181, 185, 185, 185, 189, 193, 194, 195, 206, 210, 213, 214, 233, 249 Send data to calculator Send data to Excel Frequency 10+ 6. 8. 6- 4 4 4. 2- 0--/- 200 225 250 150 Cholesterol level (in mg/dL) 125 175 2. 寸 2.Given the mean and SD of the eight forms of employment in PEAR INC., calculate the z-scores for the individuals who took the exams in the different countries. ROUND Z-SCORES TO THREE DECIMAL PLACES; WRITE Z-SCORES WITH A SIGN (ex. -1.204 for negative z-score and +1.204 for positive) Description Quiz 11: Z-Scores ROUND Z-SCORES TO THREE DECIMAL PLACES (to the nearest thousandth). EACH Z-SCORE SHOULD HAVE A + OR - SIGN IN FRONT TO INDICATE POSITIVE OR NEGATIVE VALUE. Use the data below: Eight forms of an employment exam (one in each country of expansion) are given by PEAR INC. The overall (population) mean and standard deviations of these eight forms are found in the table below. TEST LOCATION MEAN ( ) Standard Deviation ( ) Argentina 82 7 Belgium 39 3.5 China 125 11.5 Denmark 60 5.2 Egypt 92 8.5 France 420 36 Greece 160 14.5 Holland 75 6.5 1. Egypt mean = 92; SD = 8.5 Emir took the test in Egypt and scored 90; Emir's Z-score is:…The data set {2,5, q, 10, 13, 16} has mean i = 9. %3D Find the value of q. Please enter a numeric answer ONLY. Do not enter q =
- A quick quiz consists of a true/false question followed by a multiple-choice question with 6 possible answers. If both questions are answered with random guesses, find the probability that both responses are correct.Report the answer as a percent rounded to one decimal place accuracyA standard die is rolled. Find the probability that the number rolled is greater than 3. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.You are part of a 12-member team. The mean age of the team equals 44 years. Four newpersons, who happen to be the same age, now join the team. If the mean of theexpanded 16-member team equals 47 years, how old are the newly joined members?
- Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 653. A random sample of 34 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume o = 1540. The probability is (Round to four decimal places as needed.) Interpret the result. Select the correct choice and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. About OB. About OC. About OD. About % of samples of 46 years will have an annual mean gain between 400 and 800. % of samples of 34 years will have an annual mean gain between 653 and 800. % of samples of 34 years will have an annual mean gain between 400 and 800. % of sampl of 34 years will have an annual mean gain between 400 and 653.A quiz consists of 40 multiple choice questions, each with five possible answers, only one of which is correct. If a student guesses on each question, what is the mean and standard deviation of the number of correct answers? Round to the nearest thousandth.Write the formulae 60% of all the students passed an exam. If a random sample of 10 students is selected, What is the mean and the standard deviation ?
- Arandom sample of 15 individuals representing three different types of music has been observed for the frequency with which they listen to that music over the month. Fill in the ANOVA table. Be sure to round to the second decimal.Yes i need all the symbold uses on statistics and their mening. ThanksIf a dart is thrown and hits the board, what is the probability that it will hit the shaded bull's eye that has a radius of 2 inches? Give your answer in decimal form rounded to the nearest hundredth .