k Find the critical value z,12 that corresponds to the given confidence level. ce 90% Za12 =|(Round to two decimal places as needed.)
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- Please count it manually without using excel so I can learn how to calculate it 3. A landlord is the owner of an apartment decides to build new rooms for ensuit, studio, and large studio rooms. The landlord wants to match the capacity of the room to the room size, and the number of people per room. The collected data below is the populations of people per room for the past six years. The data is normally distributed, independent and have an equal standard deviation Studio Large Studio Ensuit 20 12 10 18 4 22 10 3 15 12 12 14 15 8. a. Draw the data in a dot plot. Explain which hypotheses supported by the dot plot. H0: µEnsuit = µStudio = µLarge Studio Ha: The mean scores are not equal b. Is there any difference in the mean of the people in three rooms at the level of significance of 0.01? and develop the ANOVA table.Find X1.05 for x² distribution with 10 degrees of freedom. = X0.05 (Round the answer to 3 decimal places)Interpret the Z score for a student who scored an 91 on an exam that had a mean of 86 and a standard deviation of 5. One mean above the standard deviation One standard deviation above the mean One standard deviation below the mean One mean below the standard deviation
- Heights for group of people normally distributed with mean = 63 inches and standard deviation = 2.6 inches. Find the height, h such that about 10% of people in the group are shorter than that height. (Round the answer to the nearest tenth.)h = in.What is the percentile, p ranking for that height? p = % You may need to use the appropriate table in the Appendix of Tables to answer this question.Based on the frequency polygon above, what could be the initial lower bound interval? * Test Scores 45 40 35 30 25 20 15 10 44.5 54.5 64.5 74.5 84.5 94.5 104.5 Scores FrequencyPls help ASAP ASAP.
- n=16 mean number of television per household is 4 with a standard deviation of 1 television. using chebychev's theorem, detemine at least how many households have between 2 and 6 television.Find the indicated IQ score The graph to the right depicts IQ scores of adults in the scores are normally distributed with a mean of 100 and a standard deviation of 15The indicated IQ score, X ishis S alt Use the given information to find the number of degrees of freedom, the critical values x and x. and the confidence interval estimate of g. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 98% confidence; n=23, s=65.6. 3 Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.) View an example Get more help - E D $ C 4 C R F % 5 V H T G 40 6 B Y & H 7 U N 4+ * J 8 T M hp ( V 9 K < O ► 11 ) O L alt P ctrl ? { ( / + = < } prt sc ] pause ← ← Clear all delete backspace T 1 enter E 9:20 PM AC 10/26/2022 T shift home num lock 7 home 4 Check answer 1 end end 1 8 00+ 5 O ins og up 2 ↓ * 9 pg up 6 → pg dn 3 pg dn del enter
- Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. The indicated IQ score is (Round to the nearest whole number as needed.) X 0.3949 oA special bumper was installed on selected vehicles in a large fleet. The dollar cost of body repairs was recorded for all vehicles that were involved in accidents over a 1-year period. Those with the special bumper are the test group and the other vehicles are the control group, shown below. Each "repair incident" is defined as an invoice (which might include more than one separate type of damage). Statistic Test Group Control Group Mean Damage x¯1x¯1 = $ 1,101 x¯2x¯2 = $ 1,766 Sample Standard Deviation s1 = $ 696 s2 = $ 838 Repair Incidents n1 = 12 n2 = 9 (a) Construct a 90 percent confidence interval for the true difference of the means assuming equal variances. (Round answers to 3 decimal places. Negative values should be indicated by a minus sign.) (b) Repeat part (a), using the assumption of unequal variances with Welch's formula for d.f. (Round answers to 2 decimal places. Negative values should be indicated by a minus sign.) (d) Construct separate…Interpretation of the data. t = -3.4554, df = 6991, p-value = 0.0002763 alternative hypothesis: true mean is less than 50 95 percent confidence interval: -Inf 49.25556 sample estimates: mean of x 48.57909