Question

Question 5 of 11 O Attempt4 Gregor Mendel has been called the "father of genctics," having formulated laws of inheritance even before the function of DNA was discovered. In one famous experiment with peas, he crossed pure breeds of tall and dwarf pea plants. The first generation peas were all tall. In the second gencration (F2), he obtaincd 787 tall plants and 277 dwarf plants. Mendel's first law of inheritance is a nodel with a donínant and recessive rhenolype. The first law says that we can c,pect a 3: 1 nto n F2; that is, with the dominant phenotype and with the recessive phenolype. (a) Which aspects of the data are needed for a chi-square goodness-of-fit test? If an item is required, classify it as "Yes." If it is not required, classify it as "No. 0 es 0 The observed counts are greater than five The sample size is larger than 40 There is a fixed number of observations. There are exactly two possible categorical outcomes. Each ohservation falls into just one of a finite number of complementary and mutually exclusive oulcomes The expected counts are grealer than five. All observations are independent with constant mbahiliy İw cach category The deviations of the observed counts from the expected counts are greater than onc. Answer Bank

Answer 1

The chi-square goodness of fit test is appropriate when the following conditions are met:

• The sampling method is simple random sampling.
• The variable under study is categorical.
• The expected value of the number of sample observations in each level of the variable is at least 5.