The following phenotypes and numbers were observed as the progeny of this test cross: Unbanded, brown shells Banded, yellow shells Unbanded, yellow shells Banded, brown shells 50 40 50 _ 60 Total 200 Conduct a test of independence to test whether these 2 genes are independent or not. e. Complete the following contingency table for this cross: Yylyy Bb bb f. Use your contingency table to calculate the expected # of progeny for each of the following phenotypic progeny classes, showing all calculations: Unbanded, brown shells Banded, yellow shells Unbanded, yellow shells Banded, brown shells g. Calculate X2 to 2 decimal places:
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- An und Tuate student performed a visual experiment on a number of participants. Since the experiment involved displays of colored letters and backgro after the experiment the student wondered whether the presence or absence of color vision in the participants could have produced some of the effects seen in the data. The student went back, tested his participants for colorblindness, and reanalyzed the data. He considered the variables color vision of participant ("colorblind" or "not colorblind") and trial outcome ("hit", "miss", "false alarm", or "correct rejection"). The contingency table below gives a summary of the data from 2000 trials of the experiment. Each of the trials was performed either by a colorblind participant or a non-colorblind participant. Each cell of the table contains three numbers: the first number is the observed cell frequency (f); the second number is the expected cell frequency (f) under the assumption that there is no dependence between the two variables…A study was conducted to determine whether big-city and small-town dwellers differed in their helpfulness to strangers. In this study, the investigators rang the doorbells of strangers living in a large City or small towns in the vicinity. They explained they had misplaced the address of a friend living in the neighbourhood and asked to use the phone. The following data show the number of individuals who admitted or did not admit the strangers (the investigators) into their homes: Helpfulness to strangers Admitted strangers into their home Didnot admit strangers into their home Big city dwellers 60 90 Small town dwellers 70 30 State the dependent and independent variable Is this a directional or non directionalAn automobile dealer conducted a test to determine if the time in minutes needed to complete a minor engine tune-up depends on whether a computerized engine analyzer or an electronic analyzer is used. Because tune-up time varies among compact, intermediate, and full-sized cars, the three types of cars were used as blocks in the experiment. The data obtained follow. Analyzer Computerized Electronic Car Compact 51 42 Intermediate 55 43 Full-sized 62 47 Use ? = 0.05 to test for any significant differences. State the null and alternative hypotheses. H0: ?Computerized ≠ ?ElectronicHa: ?Computerized = ?ElectronicH0: ?Computerized = ?Electronic = ?Compact = ?Intermediate = ?Full-sizedHa: Not all the population means are equal. H0: ?Computerized = ?ElectronicHa: ?Computerized ≠ ?ElectronicH0: ?Compact ≠ ?Intermediate ≠ ?Full-sizedHa: ?Compact = ?Intermediate = ?Full-sizedH0: ?Compact = ?Intermediate = ?Full-sizedHa: ?Compact ≠ ?Intermediate ≠ ?Full-sized Find the value of…
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- You were tasked to study the resilience level of 1st year Psychology students in Saint Louis University. Which among the following conditions should be observed? * Get a smaller sample because the population is homogenous. Get a sample from the 2nd year students so that the results will reflect diversity. O Make the population more heterogenous to establish variety. Get a larger sample because the students are of different ages, thus the population is heterogenous.Researchers wanted to know whether seeded clouds would produce more rainfall. An experiment was conducted in Tasmania between 1964 and 1971, and rainfall amounts were measured in inches per rainfall period for randomly selected locations in the western Tasmania. Clouds were coded as either seeded (Seeded = S) or unseeded (Seeded = U). Use Wilcoxon test (or Wilcoxon Rank test) to test whether rainfall amounts in western Tasmania is different for seeded and unseeded clouds at 10% level of significance. Click this button to reveal the data. Seeded Rainfall S 0.86 S 4.61 0.84 1.23 1.32 411 CSssssssssssss U U כ|כן 1 S 0.8 3.56 1.43 1.83 0.61 4.29 3.31 3.17 2.01 2.39 1.37 0.43 0.69 1.25 0.99 1.36 6.71 0.64 1.15 4.3 3.06 6.15 U U U U S. U U U U U U U UA chi-square independence test is to be conducted to decide whether an association exists between two variables of a population. One variable has six possible values, and the other variable has four. What is the degrees of freedom for the ?2-statistic?