Example 5.12 Suppose we are given the following series: Class interval 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Frequency 6. 12 22 37 17 8. We are asked to draw both types of ogive from these data and to determine the median.
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- 2 - What is the median value of the classified frequency series given in the table below? calculate.A) 111.2B) 112.1C) 113.5D) 112.6E) 110.9The following table shows monthly earnings of a given group of employees. Monthly earnings (000). N.o of employees 20_30 50 30_40 69 40_50 70 50_60 90 60_70 52 70_80 40 Required:compute the following Arithmetic mean Median Mean deviation Coefficient of variation Distinguish between spatial series and time seriesQuestion 18 In a small town, the mean and standard deviation of the internet bill per month per household are $30 and $5, respectively. The town has in total 400 households. Using the central limit theorem, what is the probability that the total internet bill of the entire town is no more than $12100 in a month? (Choose the following correctly)
- ON QUESTION F HOW WOULD I SHOW THE EVENT IN EXCEL FORMULA?Question 6 A researcher wishes to test the claim that on average more juvenile than adults are classified as missing persons. Records of the last five years are shown. At α = 0.05 is there sufficient evidence to support the claim? Juveniles: 65,513 65,934 64,213 61,954 59,167 Adults: 31, 364 34,478 36,937 35,946 38,209 a. Formally state (write in symbols) the hypotheses b. Is this a univariate or a bivariate analysis? Can you state it in terms of dependent and independent variables? Using the Computer printout below answer the following question: c. What is standard error of the difference under the assumption of variance equality? __________ ___________ d. What is the value of the t statistic under the assumption of equality of variances. e. What is the value of difference between the means under the assumption of equality of…Questions:1. Assume that a procedure yields a binomial distribution with a trial repeated n=20 times. Use either the binomial probability formula (or a technology like Excel or StatDisk) to find the probability of k=2 successes given the probability p=3/20 of success on a single trial. (Report answer accurate to 4 decimal places.)P(X=k)= ____2. Assume that a procedure yields a binomial distribution with a trial repeated n=12 times. Use either the binomial probability formula (or a technology like Excel or StatDisk) to find the probability of k=8 successes given the probability q=0.52 of success on a single trial. (Report answer accurate to 4 decimal places.)P(X=k)=3. The television show 50 Minutes has been successful for many years. That show recently had a share of 23, which means, that among the TV sets in use, 23% were tuned to 50 Minutes. An advertiser wants to verify that 23% share value by conducting its own survey, and a pilot survey begins with 15 households have TV sets in…
- QUESTION 12 If an experiment with a random outcome is repeated a LARGE OR SMALLL number of times, the empirical probability of an event is likely to be close to the true probability due to the THE LAW OF LARGE NUMBER OR THE CENTRAL LIMIT THEOREMConsider the following time series data. a. Show the four-quarter and centered moving average values for this time series (to 3 decimals if necessary). b. Compute seasonal indexes and adjusted seasonal indexes for the four quarters (to 3 decimals).Question. 13: find the probability a randomly selected TV will have a replacement time less than 5 years (round to three decimal places)
- Two batteries, with voltages V1 and V2, are connected in series. The total voltage V is given by V = V1 + V2. Assume that V1 has mean 11.00 V and standard deviation 2.000 V, and that V2 has mean 6 V and standard deviation 0.5 V. Find μV .Assuming V1 and V2 to be independent, find σV. (Round the final answer to three decimal places).QUESTION 12 An educator estimates that the dropout rate for seniors at high schools in Colorado is 15%. Last year in a random sample of 300 Colorado seniors, 34 withdrew from school. At α = 0.05 level of significance, is there enough evidence to reject the educator’s claim? Yes, because the p-value is 0.075 No, because the p-value is 0.075 Yes, because the p-value is 0.038 Yes, because the p-value is greater than 0.15Question #1 n=100 X=192.1 s=25.6 A. Using the central limit theorem what is the likelihood of observing a sample mean as large as 192.1 if the true population mean is 191. B. Do you suppose that the null hypotheses (that there was no change from 2002) is likely true? Why or why not?