2. A new insecticidelaboratory test, theimmediately after contact.Is this sufficient evidence to support the advertised claim? Use a=0.05.(b) Test statistic for the problem above is20 =20 =20 =20 =is advertised to kill more than 95% roaches upon contact. In ainsecticide was applied to 400 roaches and 384 died- 1.021- 0.9181.0210.918

Given that Sample size n =400 Favorable cases x =384 Sample proportion p^=x/n =384/400 =0.96

Answered: 2. A new insecticide laboratory test,…

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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4
2. During method validation, an analyst tries to assess the trueness of an analytical procedure using a CRM. The mean and standard uncertainty of 5 repeated measurements were 100 ppm and 2 ppm. If the certified is 108 ppm with standard uncertainty of 2 ppm, is there any statistical evidence of inaccuracy at 0.05 significance level. Given that to = 2.776. (t = 2.83)
If your p-value is 0.0019, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.49, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.041, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.078, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 2.6×10−102.6×10-10 (which may show on computers as 2.6 E -10), what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.0061, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your…
Scientists suspect that females can smell a particular chemical with an intensity greater than that of males. It is understood that there is a genetic component which affects the sensitivity to this chemical as well. 7 sets of full blood siblings are put near the chemical and asked to rate its intensity on a scale of 0 to 10. (0 means cannot smell.) Here are the results:Please state: 1. Qualitative (Categorical) or Quantitative (Numeric)• If Qualitative: Goodness of Fit or Test of Homogeneity/Independence?• If Quantitative: Proportions or Means?2. State the null and alternative hypotheses. 3. What distribution would you use to conclude the test, assuming all necessary assumptions weresatisfied? If Degrees of Freedom are involved, state them.
You wish to test the following claim (Ha) at a significance level of a = 0.10. H.: µ1 – µ2 = 0 Ha: µ1 – µ2 > 0 You obtain a sample of size nị the first population. You obtain a sample of size of s2 = 54.9 and a standard deviation of s1 = 78 with a mean of 2 65 with a mean of x1 17.1 from 46.7 and a standard deviation n2 7.2 from the second population. You will need to determine whether or not to pool so you will use the correct df. What is the critical value for this test? Report answer accurate to three decimal places. critical value
1.3.2 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 success
Find the standardized test statistic t for a sample with n = 10, x = 8.8, s = 1.3, and α = 0.05 if H0: μ ≥ 9.7. Round your answer to three decimal places.
Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is µd = 0. x / 734 13 y / 99 8 7 13 Compute the value of the test statistic. (Round your answer to nearest hundredth. Hint: The correct test statistic is positive.)
A sample of patients is tested to determine if they have any hospital borne infections. How large of a sample must be collected to be accurate within 0.01 at the 1% level of significance, if the hospital estimates the true proportion of patients infected is 0.045? p̂ = q̂ = E = Z= n=
If you chose the α level of .01, then which of the following p value will allow you to conclude that your result is statistically significant? a. 0.005 b. 0.05 c. 0.10 d. 0.03
Suppose you want to test the claim that μ > 25.6. Given a sample size of n = 47 and a level of significance of, a=0.01 when should you reject H0?
If the t-statistic for a single sample t-test is 1.58, what can you conclude? a. The test is significant at an alpha level of .05. b. The sample size of the test was at least 30. c. The sample mean was larger than the population mean. d. The population standard deviation was smaller than the difference between the sample mean and the population mean.

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