Let N be a normal subgroup of A4 containing a 3-cycle. Show that N = A4.
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A: To find all the normal subgroups of D4 .
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A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…
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Q: 8. Is Zg isomorphic to D4? What about Z4 and D4? Can you find a subgroup of D4 isomorphic to Z4?
A: Now we have to answer the above question .
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Q: 6.24. Let N be a normal subgroup of A4 containing a 3-cycle. Show that N = A4.
A: Let N be normal subgroup of A4 containing a 3-cycles.Show that N=A4.
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Q: Prove that every group of order 78 has a normal subgroup of order 39.
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- Show that in D8, <s> is a normal subgroup of <s,r^2> and <s,r^2> is a normal subgroup of D8, but <s> is not a normal subgroup of D8a.) What’s special about a normal subgroup? b.) When we say xH = Hx where H is a normal subgroup of G and x is an element of G, what exactly does that mean? c.) If y is an element of xH, what do we know about y? If y is also an element of Hx, what do we know about y? d.) How are these two “facts” linked together by the “=”?Show that S5 does not contain a subgroup of order 40 or 30.
- a researcher examined a number of monthly meetings (2 or 4) on job satisfaction. if the t obtained for a correlated groups t-test was 2.50, df=3, and the t critical = 3.182, what s/he conclude?(2) Consider S4 and its subgroups H = {i,(12)(34),(13)(24),(14)(23)} and K ={i,(123),(132)}. For a = (1234) ∈ S4 find (H, K) and (K, H) double cosetsMarine biologists have noticed that the color of the outermost growth band on a clam tends to be related to the time of year in which the clam dies. A biologist conducted a small investigation of whether this is true for the species Protothaca staminea. She collected a sample of 55 clam shells in February and 55 clam shells in March. 14 of the shells from February had a dark color on the outermost growth band, whereas 8 of the shells from March had a dark color on the outermost growth band. Carry out a hypothesis test to see if there is a difference in the proportion of shells with a dark outermost growth band between the two months; specifically, if the population proportion in February is higher than March. Let ? = 0.1.Note: Do all calculations as February - MarchA) The point estimate for the true difference in proportion of dark growth bands between February and March is: Note: answer using 4 decimal precisionB) The test statistic, ztest, is: Note: answer using 2 decimal…
- 6. What test is used when you are interested in studying the same group under two conditions? 7. In the equation t(78) = 1.03, p < 0.01, what does 78 represent? 8. According to the equation (for t-test for dependent sample) t(78) = 1.03, p < 0.01, what is the size of the group?Imagine that before the debate, a sample of 75 likely voters had 41 who preferred candidate A. After the debate, a separate sample of 75 likely voters had 34 who preferred candidate A. Determine if the support for candidate A decreased after the debate, using alpha=0.10. By hand.they take samples of 4 fireworks for quality co from and examine them for defects. let X be the number of defective fireworks in the sample of 4.