The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable $x$ represents the number of girls among 8 children. Complete parts (a) through (d) below.
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a. Find the probability of getting exactly 6 girls in 8 births.
0.117 (Type an integer or a decimal. Do not round.)
b. Find the probability of getting 6 or more girls in 8 births.
0.109375 (Type an integer or a decimal. Do not round.)
Probability Distribution for $\mathrm{x}$
$$\text{Unknown environment 'tabular'}$$
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Step 1 ：The problem provides a table that describes the probability distribution for the number of girls in 8 births. The random variable $x$ represents the number of girls.

Step 2 ：Part (a) asks for the probability of getting exactly 6 girls in 8 births. From the table, we can see that the probability of getting exactly 6 girls is 0.117.

Step 3 ：Part (b) asks for the probability of getting 6 or more girls in 8 births. This means we need to add up the probabilities of getting 6, 7, and 8 girls.

Step 4 ：From the table, the probability of getting 6 girls is 0.117, the probability of getting 7 girls is 0.021, and the probability of getting 8 girls is 0.005.

Step 5 ：Adding these probabilities together gives us a total probability of 0.143 for getting 6 or more girls in 8 births.

Step 6 ：Final Answer: The probability of getting exactly 6 girls in 8 births is $\boxed{{\displaystyle 0.117}}$. The probability of getting 6 or more girls in 8 births is $\boxed{{\displaystyle 0.143}}$.