From past experience it is known that 90 of one-year old

Reference no: EM13614762

From past experience it is known that 90% of one-year old children can distinguish their mother's voice from the voice of a similar sounding female. A random sample of 20 one-year olds is given this voice recognition test.

a.) Find the probability at least 3 children do not recognize their mother's voice.

b.) Find the probability all 20 children recognize their mother's voice.

c.) Let the random variable x denote the number of children who do not recognize their mother's voice. Find the mean of x.

d.) Let the random variable x denote the number of children who do not recognize their mother's voice. Find the variance of x.

Reference no: EM13614762

Questions Cloud

Apr 15 paid the first installment of the estimated taxfor : illustrate the effects on the accounts and financial statementsof recording the following selected transactions of lone

Rock on magazine co sold 11400 annual subscriptions of rock : rock on magazine co. sold 11400 annual subscriptions of rock onfor 35 during december 2008. these new subscribers

Toys r us had cost of goods sold in 2004 of7506 million and : a on march 10 anthony company received merchandise forresale from its normal supplier. the price was 3600 withterms of

Cyclone co uses the periodic inventory system the : cyclone co. uses the periodic inventory system. the followinginformation about their inventory of model xx mountain

From past experience it is known that 90 of one-year old : from past experience it is known that 90 of one-year old children can distinguish their mothers voice from the voice of

On january 1 2005 streetsmart financial inc purchased : on january 1 2005 streetsmart financial inc. purchased theassets of nit insurance co. for 40000000 a price reflecting

Find the mean variance and standard diviation of the : find the mean variance and standard diviation of the binomial distribution with the given values of n and pn- 121 p

A market-research firm has discovered that 30 of the people : a market-research firm has discovered that 30 of the people who earn between 25000 and 50000 per year have bought a new

Venture company acquired patent rights on january 3 2005 : venture company acquired patent rights on january 3 2005 for661500. the patent has a useful life equal to its legal

User Account

All Pages