wooиноvalle T 912Find The criticalneeded to construct a confidencehavex Interval of the Givenlevel with given Sample sizea) For level 90% sampo Size 1B) For level 9810 and Sample 11C Forlevel as% and Sample Size 25D) For level 99%0 and samposize 14

Suppose we want to compute the confidence interval of population mean and we are given n samples…

Answered: Find The critical valle T 912 needed to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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(c) An epidemiologist is worried about the ever increasing trend of malaria in a certain locality and wants to estimate the proportion of people infected in the peak malaria transmission period. If he takes a random sample of 150 people in that locality during the peak transmission period and finds that 60 of them are positive for malaria, find i. 99% confidence interval for the proportion of the whole infected people in that locality during the peak malaria transmission period.
Use the standard error to construct a approximate prediction interval for Y using an alpha of 5%. (Round your answer to 3 decimal places.) Obs Assessed Floor Offices Entrances Age Freeway 1 1796 4790 4 2 8 0 2 1544 4720 3 2 12 0 3 2094 5940 4 2 2 0 4 1968 5720 4 2 34 1 5 1567 3660 3 2 38 1 6 1878 5000 4 2 31 1 7 949 2990 2 1 19 0 8 910 2610 2 1 48 0 9 1774 5650 4 2 42 0 10 1187 3570 2 1 4 1 11 1113 2930 3 2 15 1 12 671 1280 2 1 31 1 13 1678 4880 3 2 42 1 14 710 1620 1 2 35 1 15 678 1820 2 1 17 1 16 1585 4530 2 2 5 1 17 842 2570 2 1 13 0 18 1539 4690 2 2 45 0 19 433 1280 1 1 45 1 20 1268 4100 3 1 27 0 21 1251 3530 2 2 41 1 22 1094 3660 2 2 33 0 23 638 1110 1 2 50 1 24 999 2670 2 2 39 1 25 653 1100 1 1 20 1 26 1914 5810 4 3 17 0 27 772 2560 2 2 24 0 28 890 2340 3 1 5 0 29 1282 3690 2 2 15 1 30 1264 3580 3 2 27 0 31 1162 3610 2 1 8 1 32 1447 3960 3 2 17 0
A development economist is interested in studying the incomes of consumersin a particular country. The population standard deviation is known to be $1,000. Arandom sample of 50 individuals resulted in a mean income of $15,000. What is theupper bound of the 99.7% confidence interval for the average income of the population?A) $15,424B) $15,330C) $15,141D) $15,052
Construct a 95% confidence interval of the difference in proportion of inside salespersons between Low and High experience. Observation Salary (AED) Position Experience 1 173154 Inside Low 2 145863 Inside Low 3 166896 Inside Low 4 155844 Inside Low 5 160392 Inside Low 6 158499 Inside Low 7 167877 Inside Low 8 191397 Inside Low 9 162366 Inside Low 10 176442 Inside Low 11 177828 Inside Low 12 170970 Inside Low 13 169383 Inside Low 14 148266 Inside Low 15 173010 Inside Low 16 156216 Inside Low 17 153357 Inside Low 18 169056 Inside Low 19 164673 Inside Low 20 160392 Inside Low 21 211545 Outside Low 22 186849 Outside Low 23 191568 Outside Low 24 206574 Outside Low 25 190434 Outside Low 26 192864 Outside Low 27 214035 Outside Low 28 196638 Outside Low 29 198072 Outside Low 30 183384 Outside Low 31 182979 Outside Low 32 183897 Outside Low 33 205680 Outside Low 34 201711 Outside Low 35 186675 Outside Low 36 188643…
Suppose that the researchers wish to use a maximum error of 0.05 at the 90% confidence level, what is the minimum number of homes (round up to the nearest whole number) that they need to visit? Formula: E=zα/2√p¯(1−p¯)/n Hint: Isolate n on one side using algebra. Confidence Level 1−α Significance Level α α/2 zα/2 90% = 0.90 0.10 0.05 1.645 95% = 0.95 0.05 0.025 1.96 98% = 0.98 0.02 0.01 2.33 99% = 0.99 0.01 0.005 2.576
Use the standard error to construct a approximate prediction interval for Y using an alpha of 5%. (Round your answer to 2 decimal places x x Fuel Economy of Selected Vehicles (n = 73, k = 4) Obs Vehicle CityMPG Length Width Weight ManTran 1 Acura TL 20 109.3 74.0 3968 0 2 Audi A5 22 108.3 73.0 3583 1 3 BMW 4 Series 428i 22 182.6 71.9 3470 0 4 BMW X1 sDrive28i 23 176.5 70.8 3527 0 5 Buice LaCrosse 18 196.9 73.1 3990 0 6 Buick Enclave 17 201.9 79.0 4724 0 7 Buick Regal 21 190.2 73.1 3692 0 8 Cadillac ATS 22 182.8 71.1 3315 0 9 Cadillac CTS 20 195.5 72.2 3616 0 10 Cadillac Escalade 14 202.5 79.0 5527 0 11 Chevrolet Camaro 1SS 16 190.6 75.5 3719 1 12 Chevrolet Cruze LS 26 181.0 70.7 3097 0 13 Chevrolet Impala LTZ 19 201.3 73.0 3800 0 14 Chevrolet Malibu 2LT 25 191.5 73.0 3532 0 15 Chevrolet Spark LS 31 144.7 61.0 2269 1 16 Chevrolet Suburban LTZ 15 224.0 80.5 5674 0 17 Chrysler 200 Touring LX 20 191.7 72.5…
Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. TInterval (13.046,22.15) x overbar equals 17.598 Sxequals 16.01712719 nequals 50 a. Express the confidence interval in the format that uses the "less than" symbol. Given that the original listed data use one decimal place, round the confidence interval limits accordingly. nothing Mbpsless than muless thannothing Mbps (Round to two decimal places as needed.) b. Identify the best point estimate of mu and the margin of error. The point estimate of mu is nothing Mbps. (Round to two decimal places as needed.) The margin of error is Eequals nothing Mbps. (Round to two decimal places as needed.) c. In constructing the confidence interval estimate of mu , why is it not necessary to confirm that the sample data appear to be from a population with a normal distribution?…
10.17 Refer to Exercise 10.16. Assuming that equal sample sizes will be taken from the two populations, how large a sample should be taken from each of the populations to obtain a 99% confidence interval for pA - pB with a width of at most .02? (Hint: Use p^ A = 0.3 and p^ B = .15 from Exercise 10.16.
Find the following. z a/2 at the 86% confidence interval.
A random sample is selected from an approximately normal popu-lation with an unknown standard deviation. For each of the following set of hypotheses, sample sizeand the T-statistic, find (a range) for the P -value using the t-table. c. HA: μ < 3, n = 18, T = −2.2d. HA: μ < 3, n = 18, T = 2.2
2/12 The confidence interval has a lower pound of_and an upper bound of_. Use ascending order. Round to two decimal places as needed.
construct a 99% confidence interval n=34 x= 19.4 s= 4.3 Find the lower and upper bound (round to two decimal places)

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Find The critical valle T 912 needed to construct a confidence havex Interval of the Given leve, with given Sample size a) For level 90% sampe Size 7 13) For level 98%0 and Sample || C) For level 95% and Sampo Size 25 D) For level 99%0 and samplesize 14