Question

A particular article reported the accompanying data on phenotypes resulting from crossing tall cut-leaf tomatoes with...

A particular article reported the accompanying data on phenotypes resulting from crossing tall cut-leaf tomatoes with dwarf potato-leaf tomatoes. There are four possible phenotypes: (1) tall cut-leaf, (2) tall potato-leaf, (3) dwarf cut-leaf, and (4) dwarf potato-leaf.

Phenotype
1 2 3 4
Frequency 926 288 295 101

Mendel's laws of inheritance imply that p1 = 9/16, p2 = 3/16 , p3 = 3/16 , and p4 = 1/16


State the appropriate null and alternative hypotheses.. Are the data from this experiment consistent with Mendel's laws? Use a 0.01 significance level. (Assume that the sample is representative of all such tomato plants.)

a) H0: p1 = 9/16 , p2 = 3/16 , p3 = 3/16 , p4 = 1/16 Ha: H0 is not true.

b) H0: p1 ≠ 9/16, p2 ≠ 3/16, p3 ≠ 3/16, p4 ≠ 1/16   Ha: H0 is not true.

c) H0: p1 ≠ 926, p2 ≠ 288, p3 ≠ 295, p4 ≠ 101 Ha: H0 is not true.

d) H0: p1 = 926, p2 = 288, p3 = 295, p4 = 101   Ha: H0 is not true.

e) H0: p1 =1/4 , p2 =1/4 , p3 =1/4 , p4 = 1/4   Ha: H0 is not true.

2. Find the test statistic and P-value. (Use technology. Round your test statistic to three decimal places and your P-value to four decimal places.)

X2=

P-value=

3. State the conclusion in the problem context.

a) Fail to reject H0. There is not convincing evidence that the data from this experiment are not consistent with Mendel's laws.

b) Fail to reject H0. There is convincing evidence that the data from this experiment are not consistent with Mendel's laws.

c) Reject H0. There is not convincing evidence that the data from this experiment are not consistent with Mendel's laws

d) Reject H0. There is convincing evidence that the data from this experiment are not consistent with Mendel's laws.

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Answer #1

The statistical software output for this problem is :

a) H0: p1 = 9/16 , p2 = 3/16 , p3 = 3/16 , p4 = 1/16 Ha: H0 is not true.

X2 = 1.254

P-value = 0.7401

a) Fail to reject H0. There is not convincing evidence that the data from this experiment are not consistent with Mendel's laws.

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