Find the standart deviation 8 11 14 17 19 21 21 12 13 a) 4,622 B) 3,642 NS) 2,548 D) 8,722 TO) 1,432
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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- Suppose the probability of erroneously transmitting a single digit is P=0.03. Compute the probability of transmitting a 4-bit code word with (a) at most one error, and (b) exactly four errors.A second-stage smog alert has been called in a certain area of Los Angeles County in which there are 50 industrial firms. An inspector will visit 10 randomly selected firms to check for violations of regulations. a. If 15 of the firms are actually violating at least one regulation, what is the pmf of the number of firms visited by the inspector that are in violation of atleast one regulation? b. If there are 500 firms in the area, of which 150 are in violation, approximate the pmf of part (a) by simpler pmf. c. For X = the number among the 10 visited that are in violation, compute E(X) and V(X) both for the exact pmf and the approximating pmf in part (b).A research center claims that that 31% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1200 adults in that country, 33% say that would travel into space on a commercial flight if they could afford it. At alpa= 0.05, isthere enough evidence to reject the research centers claim complete parts a through d below
- A second-stage smog alert has been called in a certain area of Los Angeles County in which there are 50 industrial firms. An inspector will visit 10 randomly selected firms to check for violations of regulations.a. If 15 of the firms are actually violating at least one regulation, what is the pmf of the number of firms visited by the inspector that are in violation of at least one regulation?b. If there are 500 firms in the area, of which 150 are in violation, approximate the pmf of part (a) by a simpler pmf.c. For X = the number among the 10 visited that are in violation, compute E(X) and V(X) both for the exact pmf and the approximating pmf in part (b).A second-stage smog alert has been called in a certain area of LosAngeles County in which there are 50 industrial firms. An inspector willvisit 10 randomly selected firms to check for violations of regulations. a. If 15 of the firms are actually violating at least one regulation,what is the pmf of the number of firms visited by the inspector thatare in violation of at least one regulation?b. If there are 500 firms in the area, of which 150 are in violation, approximate the pmf of part (a) by a simpler pmf.c. For X= the number among the 10 visited that are in violation,compute E(X) and V(X) both for the exact pmf and theapproximationg pmf in part (b).Which of the following statments are false ( shown in image):
- The experiment is to toss two balls into four boxes in such a way that each ball is equally likelyto fall in any box. Let X denote the number of balls in the first box.a. What is the CDF of X?In a survey of 200 boys, of which 75 were intelligent, 40 had educatedfathers; while 85 of the unintelligent boys had uneducated fathers. Dothese figures support the hypothesis that educated fathers haveintelligent boys?Were any assumptions required in order for this inference to be valid?a. Yes, the sample of network 1 ad-breaks must be independent of the sample of network 2 ad-breaks.Each population must be normally distributed, i.e. the population of all ad-breaks shown on network 1 have lengths that must be normally distributed and the population of all ad-breaks shown on network 2 have lengths that must be normally distributed.b. Yes, the sample of network 1 ad-breaks must be independent of the sample of network 2 ad-breaks.The Central Limit Theorem applies, which states the sampling distribution is normal for any population distributions.c. No. The Central Limit Theorem applies, which states the sampling distribution is normal for any population distributions.d. Yes , each population must be normally distributed, i.e. the population of all ad-breaks shown on network 1 have lengths that must be normally distributed and the population of all ad-breaks shown on network 2 have lengths that must be…
- Consider two perceptrons defined by the threshold expression True or false? Perceptron A is more general than perceptron B. more general than is defined in Chapter 2.)according to a report , 40 %people are afraid of dogs [KINDLY ANSWER ALL ] 1 in a simple random sanpling if 50 people, find the prob that less than 38 perrcent of our sample aRE AFRAID OF dogs. 2 in a simple random sanpling if 250 people, find the prob that less than 38 perrcent of our sample aRE AFRAID OF dogs. 3 the difference betweenQ 1 and Q2 shows which lawThe random digit table is applied here for part a)