In a survey, 22 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $10. Find the MARGIN OF ERROR at a 80% confidence level. Give your answer to two decimal places.

In a survey, 20 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40 and standard deviation of $7. Find the margin of error at a 80% confidence level. Give your answer to two decimal places.

In a survey, 30 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40 and standard deviation of $9. Find the margin of error at a 80% confidence level.Give your answer to two decimal places.

In a survey, 31 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $32 and standard deviation of $6. Find the margin of error at a 99% confidence level.

In a survey, 10 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $47 and standard deviation of $9. Find the margin of error at a 95% confidence level.Give your answer to two decimal places.

In a survey, 29 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $50 and standard deviation of $8. Find the margin of error at a 90% confidence level.Give your answer to two decimal places.

In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $34 and standard deviation of $6. Estimate how much a typical parent would spend on their child's birthday gift (use a 80% confidence level).Give your answers to one decimal place. Provide the point estimate and margin or error.

In a survey, 12 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $45 and standard deviation of $8. Find the margin of error at a 98% confidence level. Give your answer to two decimal places.

In a survey, 29 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $35 and standard deviation of $9. Find the margin of error at a 80% confidence level.

According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches.  If Zsike is 67 inches tall, what is her z-score?