Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of baby teeth obtained from residents in a region bom after 1979. Use the given data to construct a boxplot and identify the 5-number summary 122 123 125 129 131 133 133 136 139 143 143 143 146 141 O 149 152 154 156 159 165 The 5-number summary is N NN. and all in mBq (Use ascending order. Type integers or decimals Do not round)
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- Listed below are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample by baby teeth obtained from Pennsylvania residents and New York residents born after 1979. Use a 0.05 significance level and Wilcoxon rank-sum test to test the claim that the median amount of strontium-90 from Pennsylvania residents is the same as the median from New York residents. Pennsylvania 155 142 149 130 151 163 151 142 156 133 138 161 New York 133 140 142 131 134 129 128 140 140 140 137 143 1. what is the exact value of R = R 1 (Pennsylvania)? (Round off to 1 decimal place.) 2. what is the value of μ R ? (Type as a whole number.) 3. what is the value of σ R ? (Round off to 2 decimal places.) 4. what is the computed value of z ? (Round off to 2 decimal places.) 5. what is the tabular value of z ? (Round off to 2 decimal places.A recent poll revealed the political affiliations of 237 Americans, along with the region of the country in which they reside. Democrat Independent Republican Northwest 14 12 20 Southeast 29 23 49 West 35 18 37 To test whether the region of residence and political affiliation were related, one of the pollsters computed a chi-square statistic, ?2=2.7245, with four degrees of freedom and set an alpha (?) level of 0.05. Determine the ?-value of the chi-square statistic in this test for independence and report it to at least three decimal places. You will need to use some kind of software (statistical package or calculator that does statistical computations) to get the ?-value that precisely. P =The data set lowbwt contains information for a sample of 100 low birth weight infants born in two teaching hospitals in Boston, Massachusetts. Measurements of systolic blood pressure are saved under the variable name sbp and indicators of gender-with 1 representing a male and 0 a female-under the name sex. sbp sex tox grmhem gestage apgar5 43 1 0 0 29 7 51 1 0 0 31 8 42 0 0 0 33 0 39 0 0 0 31 8 48 0 1 0 30 7 31 1 0 1 25 0 31 1 1 0 27 7 40 0 0 0 29 9 57 0 0 0 28 6 64 0 1 0 29 9 46 0 0 0 26 7 47 0 0 1 30 6 63 0 0 0 29 8 56 0 0 0 29 1 49 1 0 0 29 8 87 1 0 0 29 7 46 0 0 0 29 8 66 0 0 0 33 8 42 0 1 0 33 8 52 0 0 0 29 7 51 1 0 0 28 7 47 0 0 0 30 9 54 1 0 0 27 4 64 1 0 0 33 9 37 0 0 0 32 7 36 1 1 0 28 3 45 0 0 1 29 7 39 1 0 0 28 7 29 0 0 0 29 4 61 0 0 0 30 3 53 1 0 0 31 7 64 0 0 0 30 7 35 0 0 0 31 6 34 1 0 0 29 9 62 0 0 0 27 7 59 0 0 0 27 8 36 1 0 0 27 9 47 0 0 0 32 8 45 1 0 1 31 2 62 0 0 1 28 5 75 1 1 0 30…
- You sample 1500 dung beetles in a population for 2 alleles A1 and A2 and get the following data: A1A1 825 individuals A1A2 525 individuals A2A2 135 Individuals Is this population in Hardy Weinberg Euilibrium, use a chi square test to determine?The records of a light bulb manufacturer show that, when the manufacturing machinery is working correctly, the defect rate (due to imperfections in the material used) is 1%. The manufacturer's control department periodically tests samples of the bulbs, and when 1.25% or more are defective, they call repair technicians for service. The control department is going to take a random sample of 4400 light bulbs. Let p be the proportion of defective light bulbs in the sample assuming the machinery is working correctly. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p. (b) Find the standard deviation of p. (c) Compute an approximation for P(P ≥ 0.0125), which is the probability that, assuming the machinery is working correctly, the repair technicians will be called. Round your answer to four decimal places.use the data to calculate tukey test, Fisher LSD and Dunnet test
- Listed below are the lead concentrations in muμg/g measured in different traditional medicines. Use a 0.010.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 1717 muμg/g. Assume that the lead concentrations in traditional medicines are normally distributed. 1010 13.513.5 16.516.5 19.519.5 2121 13.513.5 3.53.5 22.522.5 1313 3.53.5 What are the null and alternative hypotheses? A. Upper H 0H0: muμequals=1717 muμg/g Upper H 1H1: muμless than<1717 muμg/g B. Upper H 0H0: muμequals=1717 muμg/g Upper H 1H1: muμgreater than>1717 muμg/g C. Upper H 0H0: muμequals=1717 muμg/g Upper H 1H1: muμnot equals≠1717 muμg/g D. Upper H 0H0: muμgreater than>1717 muμg/g Upper H 1H1: muμless than<1717 muμg/g Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to…The British Department of Transportation studied to see if people avoid driving on Friday the 13th. They did a traffic count on a Friday and then again on a Friday the 13th at the same two locations. The data for each location on the two different dates is in the table. Do the data show that on average fewer people drive on Friday the 13th? Test at the 5% level.Traffic Count Dates 6th 13th 1990, July 137669 135825 1990, July 129699 128891 1991, September 136898 138275 1991, September 138966 139940 1991, December 132021 129640 1991, December 119268 119214 1992, March 131938 131104 1992, March 123306 124760 1992, November 129499 129219 1992, November 138568 135934