Penicillin is produced by the Penicillium fungus, which is grown in a broth whose sugarcontent must be carefully controlled. Several samples of broth were taken on each of threesuccessive days, and the amount of dissolved sugars (in mg/mL) was measured on eachsample. The results were as follows:Day 1:Day 2:Day 3:4.8 5.1 5.1 4.8 5.2 49 5.0 4.9 5.0 4.8 4.8 5.1 5.05.4 5.0 5.0 5.1 5.2 5.1 5.35.2 5.2 5.1 5.4 5.2 5.45.7 5.1 5.3 5.5 5.3 5.5 5.15.6 5.3 5.2 5.5 5.3 5.4Can you conclude that the mean sugar concentration differs among the three days?

Answered: Image /qna-images/answer/c0607b3f-e0c6-4253-a497-c6e4e9226281.jpg

Answered: Penicillin is produced by the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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14) Penicillin is produced by the Penicillin fungus, which is grown in a broth whose sugar be carefully controlled. Several samples of broth were taken on three successive days, and the amount of dissolved sugars, in milligrams per milliliter, was measured on each sample. The results were as follows.
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Sand and clay studies were conducted at the West Side Field Station of the University of California. (Reference: Professor D. R. Nielsen, University of California, Davis.) Twelve consecutive depths, each about 15 cm deep, were studied and the following percentages of sand in the soil were recorded. 19.5 27.3 30.4 24.2 33.8 27.4 24.8 18.2 16.4 8.4 1.7 0.1 Test the sequence for randomness about the median. Use α = 0.05. (a) What is the level of significance? (b) Find the sample test statistic R, the number of runs.(c) Find the upper and lower critical values in Table 10 of Appendix II. c1 c2
2. The amount of protein in the bloodstream (mg/L) is given below for 30 patients: 2.0 2.5 1.4 1.8 1.8 1.9 2.7 2.9 3.3 3.8 4.3 4.8 4.9 5.1 5.8 5.9 6.8 6.8 7.0 7.2 7.7 8.0 8.0 8.7 11.0 11.1 12.0 12.1 12.3 12.3 b) Create a stem-and-leaf plot for the above given data:
The following data refers to yield of tomatoes (kg/plot) for four different levels of salinity. Salinity level here refers to electrical conductivity (EC), where the chosen levels were EC = 1.6, 3.8, 6.0, and 10.2 nmhos/cm. (Use i = 1, 2, 3, and 4 respectively.) 1.6: 59.9 53.5 56.7 63.2 58.6 3.8: 55.6 59.6 52.6 54.5 6.0: 51.2 48.6 53.8 48.9 10.2: 44.3 48.4 41.0 47.9 46.5 In USE SALT Use the F test at level a = 0.05 to test for any differences in true average yield due to the different salinity levels. State the appropriate hypotheses. O Ho: H1 = H2 = !3 = H4 H: all four u's are unequal O Ho: H1 = H2 = H3 = H4 H: at least two u's are unequal O Ho: H1 # Hq # Hz# H4 H: all four u's are equal O Ho: H1* H2 * H3# H4 H: at least two u's are equal Calculate the test statistic. (Round your answer to two decimal places.) f = What can be said about the P-value for the test? O P-value > 0.100 O 0.050 < p-value < 0.100 O 0.010 < p-value < 0.050 O 0.001 < P-value < 0.010 O P-value < 0.001
The weight percent of silicon in six different rock samples, each containing different amounts of silicon, was measured by two different methods. The results are given in the table. Sample Method A Si wt% Method B Si wt% 1 11.570 11.500 2 15.380 15.300 3 17.950 17.830 4 22.840 22.810 5 25.110 25.150 6 27.070 27.040 Determine tcalc. tcalc = Determine ttable at the 95% confidence level. A list of t values can be found in the Student's t table. ttable =
The Fish and Game Department stocked a lake with fish in the following proportions: 30% catfish, 15% bass, 40% bluegill, and 15% pike. Five years later it sampled the lake to see if the distribution of fish had changed. It found that the 500 fish in the sample were distributed as follows. Catfish Bass Bluegill Pike 118 93 210 79 n USE SALT In the 5-year interval, did the distribution of fish change at the 0.05 level? (a) What is the level of significance? State the null and alternate hypotheses. O Ho: The distributions are different. H, : The distributions are the same. Ho: The distributions are different. H,: The distributions are different. O Ho: The distributions are the same. H,: The distributions are different. O Ho: The distributions are the same. H,: The distributions are the same. (b) Find the value of the chi-square statistic for the sample. (Round your answer to three decimal places.) Are all the expected frequencies greater than 5? Yes O No What sampling distribution will…
If X = 85, Y = 54, and Y' = 62, what is the residual score? a. -8 b. 23 c. 8 d. 31
You have been hired to measure the concentration of ammonia in water from wells at two districts on Long Island. After sampling 10 wells in one of the districts you find the values are, in mg/L: 6.4, 2.1, 1.4, 0.7, 6.8, 3.2, 2.7, 1.6, 4.9, 1.2. Your assistant plots the data from the second set of wells and the histogram of data from that sample looks pretty much the same as for your data set. Which statistical test do you anticipate that you will use? An one-sample t-test An unpaired, two-sample t-test A paired, two-sample t-test A one-way anova A Mann-Whitney U test Main Content
A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values are matched so that 10 subjects each have a systolic and diastolic measurement. Find the coefficient of variation for each of the two samples; then compare the variation. Systolic Diastolic116 78129 75160 7596 53157 90124 86114 60136 66128 74121 83
For each of the questions 1-4, answer the following (a-h are steps in a Hypothesis Test, see page 376 of your ebook). For steps f and g do both the p-value method and the critical value method: a) Claim in English: b) Claim in Symbolic Form: c) Null and Alternate Hypothesis: d) Significance Level: e) Test Statistic: f) Find Values: g) Make a Decision: h) Restate the Decision in Nontechnical Terms: i) If this is a statistically significant result, is it also a practically significant result?
c= 0.98, o=7.3, and E= 1 Assume that a preliminary sample has at least 30 me n3= (Round up to the nearest whole number.) %3D

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