Find the minimum sample size n needed to estimate for the given values of c, o, and n. c=0.90 σ=3.4, and n=81
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Find the minimum
c=0.90
σ=3.4,
and
n=81
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- We want to test if the variables X space and Y space are independent, for this, a sample of size n is selected and the data are arranged in a table of 4 rows by 6 columns and we obtain a chi subscript c superscript 2 equal 26.321, we can conclude that: Note: You must use the table in the guide text. Question 1 options: a) At a 1% significance level, variables X and Y are independent but not at 5%. b) At a significance level of 5%, variables X and Y are independent but not at 1%. c)At 1% significance level, variables X and Y are dependent and also at 5%. d)At 1% significance level, variables X and Y are independent and also at 5%.QUESTION 9 Find the test statistic to test the claim that u1Use the following sample data to answer the next questions. At the same time each day, a researcher records the temperature in each of three greenhouses. The table shows the temperatures in degrees Fahrenheit recorded for one week. Answer the ANOVA hypothesis steps below. (α= 0.025) Greenhouse 1 Greenhouse 2 Greenhouse 3 73 71 67 72 69 84 73 70 85 66 77 73 86 75 85 71 65 80 72 73 75 70 71 84 H0: Ha: F value: F-critical value: p-value: Conclusion: (Example answer: Reject or Fail to reject)For the population whose distribution is E random sample of size n = 38 are repeatedly taken. 8 Find the following. Round to four decimals if needed. Answers of 0 and 1 are possible due to rounding. a. P(ī 8.1) c. The value of a such that P(@ > a) = 0.04 : Submit Question orThe pulse rates of 154 randomly selected adult males vary from a low of 44 bpm to a high of 112 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 98% confidence that the sample mean is within 4 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimate o. (Round up to the nearest whole number as needed.) b. Assume that o = 12.4 bpm, based on the value s 12.4 bpm from the sample of 154 male pulse rates. (Round up to the nearest whole number as needed.) c. Compare the results from parts (a) and (b). Which result is likely to be better? The result from part (a) is the result from part (b). The result from is likely to be better because the same size as smaller than larger than Enter your answer in each of the answer boxes. esc 24 delete 4. Q W E T tab return F G J S caps lock C V shift 00 HI B #3Suppose a random sample of n= 16 measurements is selected from a population with mean u and standard deviation o. For each of the following values of u and o, give the values of 4, and o. a. µ= 14, o = 2 b. µ= 196, 6 = 16 H= 28, o = 20 d. µ= 14, o = 88 с. a. H; =U 0; = (Type an integer or a decimal.) O- =The pulse rates of 140 randomly selected adult males vary from a low of 45 bpm to a high of 121 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 99% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimate o. n= (Round up to the nearest whole number as needed.)The pulse rates of 149 randomly selected adult males vary from a low of 40 bpm to a high of 116 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 90% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimate o. n= (Round up to the nearest whole number as needed.) b. Assume that o = 10.1 bpm, based on the value s = 10.1 bpm from the sample of 149 male pulse rates. n= (Round up to the nearest whole number as needed.) c. Compare the results from parts (a) and (b). Which result is likely to be better? The result from part (a) is the result from part (b). The result from because is likely to be better1.3.2 Consider the output given below that was obtained using the One Proportion applet. Use information from the output to find the standardized statistic for a sample propor- tion value of 0.45. Probability of success (n): 0.30 Sample size (n): 25 Number of samples: 1000 O Animate Draw Samples Total = 1000 180 Mean = 0.301 SD = 0.091 120 60 0.08 0.16 0.24 0.32 0.40 0.48 0.56 0.64 Proportion of successThe pulse rates of 152 randomly selected adult males vary from a low of 40 bpm to a high of 104 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 98% confidence that the sample mean is within 3 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimate o. n3= (Round up to the nearest whole number as needed.)The pulse rates of 167 randomly selected adult males vary from a low of 40 bpm to a high of 104 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 99% confidence that the sample mean is within 2 bpm of the population mean. Complete parts (a) through (c) below. a. Find the sample size using the range rule of thumb to estimate o. n = (Round up to the nearest whole number as needed.) b. Assume that o = 11.2 bpm, based on the value s = 11.2 bpm from the sample of 167 male pulse rates. n= (Round up to the nearest whole number as needed.) c. Compare the results from parts (a) and (b). Which result is likely to be better? The result from part (a) is the result from part (b). The result from is likely to be better because0.77. A random sample of 903 elements selected from this population gave p = 0.66. Find For a population, N = 12,000 and p the sampling error. Enter the exact answer. sampling error =
