The president of the american insurance institute wants to comparethe yearly costs of auto insurance offered by two leadingcompanies. he selects a sample of 15 families, some with only asingle insured driver, others with several teenage drivers, andpays each family a stipend to contact the two companies and ask fora price quote. to make the data comparable, certain features, suchas the deductible amount and limits of ability, are standardized.

the sample information is reported below. at the 10 significancelevel, can we conclude that there is a difference in the amountsquoted? family progressive car ins geico car insbecker 2090 1610berry 1683 1247cobb 1402 2327debuck 1830 1367dubrul 930 1461eckroate 697 1789german 1741 1621glasson 1129 1914king 1018 1956kucic 1881 1772meredith 1571 1375obeid 874 1527price 1579 1767phillips 1577 1636tresize 860 1188