USA Today (\"Hybrid Car Sales Rose 81% Last Year,\" April 25, 2005) reported the top five states for sales of hybrid cars in 2004 as California, Virginia, Washington, Florida, and Maryland. Suppose that each car in a sample of 2004 hybrid car sales is classified by state where the sale took place. Sales from states other than the top five were excluded from the sample, resulting in the accompanying table. (The given observed counts are artificial, but they are consistent with hybrid sales figures given in the article.) The 2004 population estimates from the Census Bureau web site are given in the accompanying table. The population proportion for each state was computed by dividing each state population by the total population for all five states. Use the 2goodness-of-fit test and a significance level of = 0.01 to test the hypothesis that hybrid sales for these five states are proportional to the 2004 population for these states. Let p1, p2, p3, p4, and p5 be the actual population proportions of 2004 for the five states in the following order: California, Virginia, Washington, Florida, Maryland. State the null and alternative hypotheses. Calculate the test statistic. (Round your answer to two decimal places.) 2 = What is the P-value for the test? (Round your answer to four decimal places.) P-value = StateObserved Frequency California 254Virginia 53 Washington 37Florida 34Maryland 34Total 412 Solution A) OPTION B: H0: p1 = 0.495, p2 = 0.103, p3 = 0.085, p4 = 0.240, p5 = 0.077 Ha: H0 is not true. [ANSWER] ******************** b) Doing an observed/expected value table, O E (O - E)^2/E 254 203.94 12.28794547 53 42.436 2.629797719 37 35.02 0.111947459 34 98.88 42.57093851 34 31.724 0.163288866 Using chi^2 = Sum[(O - E)^2/E], chi^2 = 57.76391803 [ANSWER, TEST STATISTIC] ******************* c) As df = a - 1, a = 5 df = a - 1 = 4 Thus, the p value is p = 8.5533*10^-12 = 0.0000 [ANSWER].

1. what Is the purpose of heating the slide during the staining process ?
A.) allows for further penetration of the stain through the lipoidal wall into the cytoplasm
B.) eliminates contaminating bacteria
C.) kills the bacteria and adheres it to the slide
what Is the purpose of heating the slide during the staining process ?
A.) allows for further penetration of the stain through the lipoidal wall into the cytoplasm
B.) eliminates contaminating bacteria
C.) kills the bacteria and adheres it to the slide
what Is the purpose of heating the slide during the staining process ?
A.) allows for further penetration of the stain through the lipoidal wall into the cytoplasm
B.) eliminates contaminating bacteria
C.) kills the bacteria and adheres it to the slide
Solution
You flame the loop before to destroy any organisms already on it to prevent contamination of
your culture You flame it afterward to prevent unintended spread of bacteria especially if the
bacteria you are culturing is highly virulent Heat fixation allows the bacteria to stick to the
slide,instead of rinsing off with the various rinses used during the staining process Heat fixation
is the procedure used to adhere a bacterial smear to a glass slide for viewing by a compound
microscope.It denatures the proteins on the surface of the bacteria causing them to be sticky
After a smear has been allowed to dry at room temperature,the slide is gipped by tungs or a
clothspin and passed through the flame of a bunsen burner several times to heat-kill and adhere
the organism to he slide Heat fixation cannot be used in capsular stain method as heat fixation
will shrink or destroy the capsule and cannot be seen in stains Sterilizing of inoculation loop is
essential in order to avoid contamination of slide preparations and also to prevent contamination
of inoculum plate