A researcher studied iron-deficiency anemia in women in each of two developing countries. Differences in the dietary habits between the two countries led theresearcher to believe that anemia is less prevalent among women in the first country than among women in the second country. A random sample of 1900women from the first country yielded 441 women with anemia, and an independently chosen, random sample of 1800 women from the second country yielded461 women with anemia.Based on the study can we conclude, at the 0.01 level of significance, that the proportion p₁ of women with anemia in the first country is less than theproportion P₂ of women with anemia in the second country?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts below. (If necessary, consult a list offormulas.)(a) State the null hypothesis H. and the alternative hypothesis H₁.H₁ :0H₁ :0(b) Determine the type of test statistic to use.(Choose one) ▼(c) Find the value of the test statistic. (Round to three or more decimal places.)0(d) Find the p-value. (Round to three or more decimal places.)0(e) Can we conclude that the proportion of women with anemia in the firstcountry is less than the proportion of women with anemia in the secondcountry?O Yes O Noμ|x5OSX000#0 O

Given that Sample sizes n1=1900 , n2=1800 Favorable cases x1=441, x2=461 NOTE:- According to…

Answered: earcher to believe that anemia is less…

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 mean +/- 1 sd of ln (calcium intake) among 25 females, 12-14 years old,below the poverty level is 6.56 +/- .64. Similarly, the mean +/- 1 sd of ln (calciumintake) among 40 females, 12-14 years old, above the poverty line is 6.8 +/- .76.Would you use a paired t test or a t test for independent samples to answer thisquestion?
A survey of 30 r/s students in a large college indicated that 19 of them held off-campus jobs. Does this survey result provide strong evidence that more than 50% of all studentsin this college hold off-campus jobs? Use an appropriate p-value to draw and explain your conclusion.
QUESTION 1 The Centers of Disease Control and Prevention has launched studies of drug-resistant gonorrhea, Of 110 cases tested in Alabama, 14 were found to be drug- resistant. Of 95 cases in Texas, 7 were found to be drug-resistant. Does the data indicate that the proportion of drug-resistant cases in Alabama is higher thar proportion of cases in Texas at a=,0057 For the hypothesis stated above, what is the test statistic (in terms of "Alabama" minus "Texas "? O a. 1.2618 O b. 1.3092 OC. 1.2891 Od. None of the answers is correct Oe. 1.3303 QUESTION 2 No Siblings - With Siblings 10 Sample Size Sample Mean Sample Standard Deviation 67.0000 141.6608 Confidence Interval (in terms of No Siblings - With Siblings) Confidence Coefficient 0,98 Lower Limit -59.3922 Upper Limit 193.3922 Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Air 吕口 F3 000 F2 O00 FA @ 2 3 4 5 7 Q W E R T Y A S D F G H * CO
If a hypothesis is true and the difference between the control group and the experimental group is small and you are using a small sample size it is likely to find a significant difference between the groups. True False
The partially completed ANOVA table given in this problem is taken from the article “Perception of Spatial Incongruity” (Journal of Nervous and Mental Disease), in which the abilities of three different groups to identify a perceptual incongruity were assessed and compared. All individuals in the experiment had been hospitalized to undergo psychiatric treatment. There were 21 individuals in the depressive group, 32 individuals in the functional “other” group, and 21 individuals in the brain-damaged group. (round all results to two decimal places) Fill the ANOVA table below: (round all except degrees of freedom to 2 decimal places) Source of Variation Degrees of Freedom Sum of Squares Mean Square Treatments 76.09 Error Total 1123.14 What is the F test statistic here? (round to 2 decimal places) _________
Z=, P-Value=
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This is a long question and both pictures are part of the same question though.
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Volunteers who had developed a cold within the previous 24 hours were randomized to take either zinc or placebo lozenges every 2 to 3 hours until their cold symptoms were gone. Twenty-five participants took zinc lozenges, and 23 participants took placebo lozenges. For the placebo group, the mean overall duration of symptoms was x, 7.7 days, and the standard deviation was 1.4 days. The mean overall duration of symptoms for the zinc lozenge group was x, 4.2 days, and the standard deviation of overall duration of symptoms was 1.4 days. n USE SALT (a) Calculate x, - x, difference in sample means. days 2x - 'x Compute the unpooled s.e.(x, – x,) standard error of the difference in means. (Round your answer to four decimal places.) s.e.(x1 - X2) = days (b) Compute a 95% confidence interval for the difference in mean days of overall symptoms for the placebo and zinc lozenge treatments. Use the unpooled standard error and use the smaller of n1 1 and n2 1 as a conservative estimate of degrees of…
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