Q4) The infection percent of a disease in a town was 0.01%. Find the probability that there was no infection by this disease in that town * of 5,000 population äbäi 15 a) Using binomial distribution 0.8133 0.7444 0.6065 none of all above äbäi 15 b) Using Poisson distribution 0.4325 0.5506 O 0.7146 O none of all above
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- It is assumed that the A/C chair car reservation from Sharjah to Dubai is uniformly distributed during the summer holidays. In order to confirm that it is uniform a random sample of reservation for 10 days are given below: Is the assumption valid for 5% level of significance?An aged care office has staffing concerns about the number of calls they receive. If the number of calls per 5-minute interval exceeds 2, then a new receptionist should be hired. Over a particular 1-hour time interval, 29 calls were received. Assuming that the calls arrive in a Poisson distribution, conduct a hypothesis test with a 1% significance level to determine whether a new receptionist should hired.In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6959 subjects randomly selected from an online group involved with ears. There were 1323 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution
- And umpires association is conducting an hypothesis test concerning the proportion of high school baseball players that can accurately state the infield fly rule. To obtain the P value of their test, they need to compute the chance that two or fewer players out of 15 sampled on a team knows the rule. Previous studies have indicated that 1/3 of high school players can state the rule. Use the binomial distribution to calculate the appropriate P-value. Do you think your answer gives evidence that the team is less informed about the rule than the typical team? Let alpha= .01 Using four decimal places enter your p-value (find in the t table)= Decision and conclusion: a. Reject HO, we do not have sufficient evidence to conclude this team is less informed about the rule than the typical team b. Fail to reject HO we do not have sufficient evidence to conclude this team is less informed about the rule than the regular team c. Reject HO we do have sufficient evidence to conclude this team is…And umpires association is conducting an hypothesis test concerning the proportion of high school baseball players that can accurately state the infield fly rule. To obtain the P value of their test, they need to compute the chance that two or fewer players out of 15 sampled on a team knows the rule. Previous studies have indicated that 1/3 of high school players can state the rule. Use the binomial distribution to calculate the appropriate P-value. Do you think your answer gives evidence that the team is less informed about the rule than the typical team? Let alpha= .01 Using four decimal places enter your p-value= Decision and conclusion: a. Reject HO, we do not have sufficient evidence to conclude this team is less informed about the rule than the typical team b. Fail to reject HO we do not have sufficient evidence to conclude this team is less informed about the rule than the regular team c. Reject HO we do have sufficient evidence to conclude this team is less informed about the…In a certain school district, it was observed that 30% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 119 out of 336 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the α=0.01level of significance. a. What is the hypothesized population proportion for this test? p=(Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol.) b. Using the normal approximation for the binomial distribution (without the continuity correction), was is the test statistic for this sample based on the sample proportion? z=(Report answer as a decimal accurate to 3 decimal places.) You are now ready to calculate the P-value for this sample. P-value = (Report answer as a decimal accurate to 4 decimal places.)
- Out of a sample of 160 girls , 100 preferred FANTA to COKE while a sample of140 boys had 30 preferring COKE to FANTA .At level of significance α = 0.01and without using normal distribution, find out if there is a significant differencebetween the two proportions preferences for FANTATraffic accidents occur frequently on the 100 km long E-5 highway connecting Konya and Karaman: Although expert teams affiliated to the General Directorate of Highways (KGM) say that the accidents on the E-5 are randomly (unevenly) distributed, the news media state the opposite. KGM has published the locations of 20 accidents resulting in death or injury in the past 12 months, showing the distances from Konya as follows: Use the Kolmogorov-Smirnov test to test whether the distribution of locations of accidents that occurred in the last 12 months is evenly distributed.In a pre-election poll, a candidate for district attorney receives 230 of 450 votes. Assuming that thepeople polled represent a random sample of the voting population, test the claim that a majority ofvoters support the candidate. Use a 0.05 significance level to conduct a hypothesis test. See examples insection 9.3 and use normal distribution to find the P‐value.
- In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6980 subjects randomly selected from an online group involved with ears. There were 1306 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution. indentify the null hypotheis and alternative hypothesisA check-cashing service has found that approximately 5% of all checks submitted to the service for cashing are bad. After instituting a check verification system to reduce its losses, the service found that only 45 checks were bad in a total of 1124 cashed. b). Which statistical distribution should be applied in this situation and why? Explain carefully. c). Knowing that a significant amount of capital investment were required to institute the system, should the service put much weight on the conclusion of part (a)? Explain carefully.Guven, Elaimis, Binokay, and Tan (2003) studied the distribution of paw preferences in rats using a computerized food-reaching task. For a sample of n = 144 rats they found 104 right-handed animals (and thus 40 left-handed animals). Is this significantly different from what would be expected if right- and left-handed rats are equally common in the population? Test with an alpha level of 0.01.
