You are watching: Express the confidence interval in the form of p ± e

**0.742** **0.858**

**Yes, the proportion of girls is substantially various from 0.5.**

**0.240** 0.314

No, the confidence interval includes 0.25, so the true percentage might quickly equal 25%

**a. 215**

*546 x 39.4% = 215.124*

**b. 0.340** 0.448

**c.** ** 0.367** 0.421

**d.** The **99**% confidence interval is broader than the **80**% confidence interval. As the confidence interval widens, the probability that the confidence interval actually does contain the population parameter increases.

** 0.381** 0.459

** ** Yes, the confidence interval does not incorporate the true portion of immigrants.

n = **752**

n = **597**

**a)** n = **1035**

**b)** n = **1037**

**a)** n = **114**

**b)** n = **49**

**c)** No, a sample of students at the nearemainder college is a convenience sample, not an easy random sample, so it is incredibly possible that the results would not be representative of the population of adults.

*Just surveying the adults at the nearemainder college is a convenience sample, which is not necessarily representative of the population.*

**Using a sample statistic to estimate the population proportion is using descriptive statistics.**

*Using a sample statistic to estimate the populace propercent is not making use of descriptive statistics; it is utilizing inferential statistics.*

**A instrumental worth is the area in the right-tail region of the typical normal curve.**

*A critical worth is a z-score connected through the area in the right-tail area of the standard normal curve, not the location itself.*

**The sample should be a voluntary response or convenience sample.See more: Fun. Why Am I The One Lyrics**

*The sample have to be a straightforward random sample as voluntary response or convenience samples present bias and also reduce the relicapacity of any type of poll results.*