a) What is the critical value? b) What is the pooled sample variance? c) What is the t
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a) What is the critical value?
b) What is the pooled sample variance?
c) What is the t value?
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- The mean score of a random sample of 35 Grade 11 students who took the first periodic test iscalculated to be 86. The population variance is known to be 0.10.Questions 1 and 2 1. A sample with of a mean M = 40 and a variance of s^2 = 20 has an estimated standard error of 1 point. How many scores are in the sample? 2. What is the estimated standard error for a sample of n = 9 scores with SS = 72 in a 1 sample t-test?QUESTION 11 If a hypothesis test with a significance level of \alpha rejects H0: \ mu 1 = \mu 2 in favor of Ha: \mu 1!= \mu 2, then the corresponding (1-\alpha) % confidence interval for (\mu 1 \mu 2) does not contain zero. Training False True
- Question 12 < Create a 85% confidence interval for a population mean from a sample of size 57 with sample mean = 10. The population standard deviation is known to be σ = 3. [three decimal accuracy] [three decimal accuracy] )A mathxl.com/Student/PlayerHomework.aspx?homeworkld=D574125327&questionld%39&flushed%3Dfalse&cld=6161404¢ T'Mara Gilchri: O Do Homework - T'Mara Gilchrist- Google Chrome vel PTO Mat 122 -80 Fall 2020 Homework: Section 7.1 Homework HI 10 of 25 (13 complete) ▼ Score: 0 of 1 pt 7.1.23 Find the number of subsets for the following set. (4,5,6,7) How many subsets does this set have? Type a whole number.) Question Viewer Enter your answer in the answer box and then click Check Answer. ll parts showing Clear All Check a 立Given that SST = 270, R ^ 2 = 0.75 and n = 40 then the model error variance is A. 2.776 B. 1.677 C. 1.776 D. 2.677
- Question 2 of 9 (i point A sample of size 190 will be drawn from a population with mean 45 and standard deviation 11. Use the TI-84 calculator. Part 1 of 2 Find the probability that x will be less than 43. Round the answer to at least four decimal places. The probability that x will be less than 43 is Part 2 of 2 Find the 60" percentile of x. Round the answer to two decimal places. th The 60 percentile iswe can make a causal claim from the results of the chi-square test correct?i mathdl.com/Student/PlayerHomework.aspx?homeworkld=5741253278&questionld%3D20&flushed=false&cld%3D6161404¢erwin=yes T'Mara Gilchrist & | Do Homework- TMara Gilchrist-Google Chrome 10/08/20 4:06 PN Sa Mat 122 - 80 Fall 2020 Homework: Section 7.1 Homework HW Score: 76%, 19 of 25 21 of 25 (20 complete) Score: 0 of 1 pt E Question Help 7.1.51 Let A= (3,7,9,16,17), B= (3,7,10,17), C= {7,10,17), D = {3,10), E = {9), and U= {3,7,9,10,16,17,18). Which pairs of sets are disjoint? Seled all that apply. O B. A and B O C. C and E O D. A and D DA. Band E DE. E and U OL Band C OG. Band D OK. C and U OF. Aand C O H. D and E OJ. A and U O L. D and U OM. Cand D ON. A and E O 0. B and U O P. None of the sets are disjoint. Question Viewer Click to select your answer(s) and then click Check Answer. All parts showing Clear All This course (Mat 122-80 Fa 2020) Ts based on Piedmont Technical College: MAT 122 Terms of Use Privecy Policy Copyright© 2020 Pearson Education Inc. All Rights Reserved. Check…
- Question 2 The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution.Test H0 : p1=p2 vs Ha : p1<p2 when the samples have n1=170 with p^1=0.17, and n2=80 with p^2=0.23. The standard error of p^1-p^2 from the randomization distribution is 0.06.Find the value of the standardized z-test statistic.Round your answer to two decimal places.z= Enter your answer in accordance to the question statementExplain how a 95% confidence interval of beta1 can be used to testH0 : beta 1 = 5 at alpha= 0,05 level.When the Titanic sank, passenger survival rates were recorded along with additional information like their name, what class ticket they had, their age, and whether or not they had children. Some of these factors may predict whether or not a passenger was likely to survive the accident. The data set "Titanic survival.jasp" contains actual recorded data from the event. Using the variables "Class" and "Survived", conduct a Chi-Square Test for Independence, at alpha = 0.05, to see if a passengers ticket class (first, second, or third class) is significantly associated with their survival rates. Identify the correct interpretation A. The actual probability (p) of obtaining another sample of passengers from an ocean liner catastrophe from the early 1900's with a distribution of survival and death rates across the three classes of tickets purchased (first, second, and third class) that looks like our sample is (p < 0.001), which is less than 1%, meaning this result is highly…