1. Your lab manager asks you to create the new control range for the new lot ofhematology control level 1. The following 20 hemoglobin values are gathered todetermine the control limits. Using a calculator or website SD function, calculate andrecord the mean, the standard deviation, and the 95% confidence interval for this setof values.4.24.74.34.64.74.94.64.04.44.45.04.54.04.14.84.44.94.74.24.7Mean:1 SD:95% Confidence range:2. Given the results above, label the following Levey-Jennings Control chart with all ofthe following:MeanValues for -3SD, -2SD, -1SD, +1SD, +2SD, +3SDControl 1 HemoglobinLevey-Jennings chartAUGUST1 24 5 67 8 9 10..DayResult in mg/dL 3. You have your Levey-Jennings Control chart ready. Your supervisor tells you tobegin using the lot. Record the first 10 days of Control 1 Hemoglobin results. Inyour lab, you run controls once per day because you are a clinic open from 8-5pm.Plot each data point on your labeled chart and circle whether the controls areacceptable or “out."DAY of August1= 4.5 mg/dl2=4.2 mg/dl3=4.1 mg/dl4=4.6 mg/dl5=4.7 mg/dl6=4.8 mg/dl7=4.4 mg/dl8=4.4 mg/dl9=4.2 mg/dl10=4.9 mg/dlACCEPTΑBLEOUT OF CONTROL4. You run a normal serum glucose control and obtain a value of 78.4 mg/dL. The meanfor this control is 74.8 mg/dL and 1 SD has been calculated as 1.2. Is the value of78.4 within 2SD (95% confidence interval)? Circle the correct answer.YESNO

Answered: Image /qna-images/answer/2adc089d-2df7-4b37-97ba-4c7ad11df60e.jpg

Answered: 1. Your lab manager asks you to create…

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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The Gidget Company makes widgets. If the production process is working properly, it turns out that the widgets are normally distributed with a hean length of at least 2.6 feet. Larger widgets can be used or altered but shorter widgets must be scrapped. You select a sample of 25 widgets, and the mean length is 2.46 feet and the sample standard deviation is 0.16 foot. Do you need to adjust the production equipment? Complete parts (a) through (d). Click here to view page 1 of the critical values for the t Distribution. Click here to view page 2 of the critical values for the t Distribution. a. If you test the null hypothesis at the 0.05 level of significance, what decision do you make using the critical value approach to hypothesis testing? What are the null and alternative hypotheses for this test? 'Α. H μ22.6 H4: µ 2.6 O C. Ho:H22.46 H,:H2.6 H,: µs2.6 O E. Ho: us2.46 H,:µ>2.46 OF. Ho:H<2.6 H1:µ22.6 What is the test statistic for this test? - 4.3750 (Round to four decimal places as…
A random sample of 82 women showed that the mean number of children reported was 1.87 with a standard deviation of 1.7 . (Interestingly, a sample of 82 men showed a mean of 1.3 children.) Complete parts (a) through (c) below. LOADING... Click the icon to view the t-table. Question content area bottom Part 1 a. Find a 95% confidence interval for the population mean number of children for women. Because the sample size is so large, you can use 1.96 for the critical value of t (which is the same as the critical value of z) if you do the calculations manually. Choose the correct answer below and, if necessary, fill in the answer boxes to complete your choice. (Type integers or decimals rounded to the nearest hundredth as needed. Use ascending order.)
Given this data: {4, 5, 8, 11, 16, 8},(a) Find the 90% confidence interval for the mean.(b) Interpret what does the interval mean?
The EPA tests cars for city miles per gallon (mpg). For one model, a sample of 16 cars were tested for mpg, the results follow. 28 25.7 25.8 28 28.5 29.8 30.2 30.4 26.9 28.3 29.8 27.2 26.7 27.7 29.5 28 Find the 95% confidence interval for mean mpg. Find the 99% confidence interval for mean mpg.
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
Find the critical value tc for a 95% confidence level when the sample size is 18. Use Table 4 on page A10 (Appendix) A. 1.740 B. 2.110 C. 2.101 D. 1.734
The following is a sample of patient's calcium tests in mg/dL. 9.3 8.8 10.1 8.9 9.4 9.8 10.0 9.9 11.2 12.1 Find each of the following: The mean: The median: The third quartile: The standard deviation: The variance:
Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"
Consider the following data: −10, −10, 0, 3, −10, 3, 3 Step 1 of 3: Calculate the value of the sample Variance. Round your answer to one decimal place. Step 2 of 3: Calculate the value of the sample deviation. Round your answer to one decimal place. Step 3 of 3: Calculate the value of the range.
The accompanying table shows data for the weights of backpacks for men and women. Assume that the data are from random samples and the distributions are Normal. Complete parts (a) and (b) below. E Click the icon to view the data table. a. Find a 95% confidence interval for the difference between means HFemale - HMale state whether it captures 0, and explain what that shows about the mean. The 95% confidence interval is ( D (Round to two decimal places as needed. Use ascending order.) Backpack weights Female Male 10 10 12 8 9. 7 5 10 7 20 3 11 8 14 13 11 14 6 7 22 11 12 15 10 17 22 10 7 25 11 7 15 11 11 4 16 13 20 21 15 10 9. 16 10 15 13 10 10 17 12 11 38 6. 6. 7 19 12 13 20 8 14 15 18 19 10 16 16 13 18 12 14 13 13 15 14 14 7 7 14 13 27 11
A student wanted to determine the accuracy and precision of three pieces of glassware, labelled A, B and C using the same procedure as you did for Lab 2. The percent error and percent relative standard deviation values for the 3 pieces of glassware are summarized below. %error %RSD Glassware A 4 20 Glassware B 10 10 Glassware C 30 Rank the glassware in order of Least Accurate to Most Accurate Most Accurate Least Accurate Glassware Glassware A Glassware B Glassware

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